Sourdough Discard Coffee Cake Recipe

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If you have a jar of sourdough starter sitting in your fridge begging to be used, this sourdough discard coffee cake recipe is exactly what you need. It turns that leftover discard into a warmly spiced, incredibly tender cake layered with buttery cinnamon streusel throughout and piled on top.

The discard adds a subtle tang that balances the sweetness perfectly, and combined with sour cream in the batter, you get a crumb that stays moist for days.

This isn’t a fussy recipe. You don’t need a stand mixer, and the steps are straightforward enough for a beginner baker. It comes together in about 15 minutes of hands-on prep, and the result looks and tastes like something straight from a bakery counter.

Perfect for a lazy weekend morning, a brunch spread, or even an afternoon treat with coffee, this cake earns a permanent spot in your rotation.

Looking for more ways to put your discard to work? This pairs beautifully with Sourdough Discard Blueberry Muffins for a complete brunch spread.

Table of Contents

Why You’ll Love This Sourdough Discard Coffee Cake Recipe

This cake checks every box you want in a baked good.

The sourdough discard adds depth without making the cake taste sour, while sour cream keeps the crumb dense, moist, and rich. It’s one of those recipes where the “secret” ingredients do all the heavy lifting.

The double-layer streusel is the real star. Half gets swirled into the middle of the cake and the other half goes on top, so every slice has that sweet, crumbly, cinnamon bite in every single forkful.

It uses pantry staples you likely already have on hand, making it a zero-trip-to-the-store kind of recipe.

Uses sourdough discard: No waste, no guilt, and maximum flavor from ingredients you already have.
Tender, moist crumb: The combination of discard and sour cream creates a bakery-quality texture at home.
Double streusel layers: Cinnamon goodness runs through the middle and tops the cake for maximum flavor.
No mixer required: A couple of bowls and a rubber spatula are all you need.
Feeds a crowd: Made in a 9×9 inch pan, it slices into 9 generous portions.
Beginner-friendly: The steps are simple, clearly sequenced, and forgiving.

You might also enjoy: Coffee Cake Recipe Without Sour Cream

Ingredients

This recipe keeps things simple and relies on everyday pantry items, with a few key players that make all the difference. The sour cream and sourdough discard are both non-negotiable for that signature moist, tender texture. Make sure your butter is softened and your eggs are at room temperature before you begin.

For the Streusel:

1 cup (125g) all-purpose flour
1 cup (200g) light brown sugar, packed
1 tablespoon ground cinnamon
1/4 teaspoon salt
1/2 cup (115g) unsalted butter, cold and cubed
1/2 cup (60g) chopped pecans (optional but recommended)

For the Cake:

1/2 cup (115g) unsalted butter, softened to room temperature
3/4 cup (150g) granulated sugar
2 large eggs, room temperature
1 teaspoon pure vanilla extract
1/2 cup (120g) sourdough discard, unfed (room temperature)
3/4 cup (180g) full-fat sour cream
1 1/2 cups (190g) all-purpose flour
1 1/2 teaspoons baking powder
1/2 teaspoon baking soda
1/2 teaspoon salt

For the Optional Vanilla Glaze:

1 cup (120g) powdered sugar
2-3 tablespoons heavy cream
1/2 teaspoon pure vanilla extract

Kitchen Equipment Needed

Having the right tools on hand before you start will make this recipe much smoother. A kitchen scale is particularly helpful here, since accurate measurements lead to the best texture every time.

9×9 inch square baking pan
Parchment paper
Kitchen scale
2 large mixing bowls
Medium mixing bowl
Rubber spatula
Whisk
Pastry cutter or fork (for streusel)
Electric hand mixer (optional, but helpful for creaming butter)
Measuring cups and spoons
Toothpick or cake tester

Another favorite: Sourdough Discard Banana Bread Recipe

Recommended Products for This Recipe

These are products that genuinely improve the outcome of this recipe, chosen for their quality and performance.

1. USA Pan 9×9 Inch Square Baking Pan

This light-colored aluminized steel pan heats evenly and helps your cake bake through without burning the edges or bottom. The nonstick coating releases the cake cleanly, and the ridged surface promotes air circulation for a more even bake. It’s a workhorse pan that will serve you through hundreds of recipes.

Get it on Amazon

2. OXO Good Grips Stainless Steel Food Scale

Weighing your ingredients, especially the flour and sourdough discard, takes the guesswork out of baking and leads to consistent, reliable results every time. This scale is precise, easy to read, and simple to tare between additions. A must-have for any serious home baker.

Get it on Amazon

3. Bob’s Red Mill Organic All-Purpose Flour

A high-quality, consistent all-purpose flour makes a real difference in the texture of baked goods. Bob’s Red Mill produces a reliable protein content that gives this cake the right crumb structure. It’s widely available and consistently delivers excellent results.

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4. Nielsen-Massey Pure Vanilla Extract

Vanilla is one of the most important flavor notes in this cake, so using a good-quality pure extract (not imitation) really pays off. Nielsen-Massey is a gold standard for pure vanilla with a deep, complex flavor that elevates baked goods noticeably. A small bottle goes a long way.

Get it on Amazon

5. Diamond Crystal Kosher Salt

Salt balances sweetness and enhances every other flavor in the cake and streusel. Diamond Crystal is lighter grain than table salt, which means it dissolves evenly and you won’t accidentally over-salt your bake. It’s the preferred salt of professional bakers for a reason.

Get it on Amazon

Step-by-Step Instructions

1. Prepare Your Pan and Preheat the Oven

Preheat your oven to 350°F (175°C). Make sure the rack is in the center position for even baking.
Line a 9×9 inch (23x23cm) square baking pan with parchment paper, leaving an overhang on at least two sides so you can lift the finished cake out easily.
Lightly grease the parchment and any exposed sides of the pan with butter or nonstick cooking spray. Set the prepared pan aside.

2. Make the Cinnamon Streusel

In a medium mixing bowl, combine 1 cup (125g) all-purpose flour, 1 cup (200g) packed light brown sugar, 1 tablespoon ground cinnamon, and 1/4 teaspoon salt.
Whisk the dry ingredients together until they are evenly combined with no clumps.
Add the 1/2 cup (115g) cold cubed unsalted butter to the bowl. Using a pastry cutter, two forks, or your fingertips, work the cold butter into the dry mixture. Press and crumble until the mixture resembles coarse, pea-sized crumbs. Some larger pieces are fine and actually desirable for a crunchy topping.
If using pecans, add 1/2 cup (60g) of chopped pecans and stir them into the streusel mixture with a fork.
Place the streusel in the refrigerator while you prepare the cake batter. Keeping it cold helps the streusel hold its crumbly texture during baking, rather than melting into the batter.

3. Mix the Dry Cake Ingredients

In a separate medium bowl, add 1 1/2 cups (190g) all-purpose flour, 1 1/2 teaspoons baking powder, 1/2 teaspoon baking soda, and 1/2 teaspoon salt.
Whisk these together thoroughly until everything is evenly combined. Set aside. Having the dry ingredients pre-mixed means you won’t need to overmix once you add them to the wet ingredients.

4. Cream the Butter and Sugar

In a large mixing bowl, add the 1/2 cup (115g) softened unsalted butter and 3/4 cup (150g) granulated sugar.
Using a hand mixer or a sturdy whisk, beat the butter and sugar together on medium speed for about 2-3 minutes, until the mixture looks pale, fluffy, and slightly increased in volume. This step incorporates air into the batter and is key to a light, tender crumb. Don’t rush it.

5. Add the Eggs and Vanilla

Crack in 2 large room-temperature eggs, one at a time. Beat well after each addition, about 30 seconds per egg, scraping down the sides of the bowl as needed. Room-temperature eggs incorporate more smoothly and help the batter stay emulsified.
Add 1 teaspoon pure vanilla extract and mix until just combined.

6. Add the Sourdough Discard and Sour Cream

Add 1/2 cup (120g) unfed sourdough discard (room temperature) to the butter-egg mixture. Mix on low speed or stir with a spatula until combined.
Add 3/4 cup (180g) full-fat sour cream and stir until the mixture is smooth and evenly combined. The batter will look rich and creamy at this stage. Using full-fat sour cream is important here. Low-fat versions release more water during baking and can make the crumb gummy.

7. Fold in the Dry Ingredients

Add the flour mixture from Step 3 to the wet ingredients all at once.
Using a rubber spatula, gently fold the dry ingredients into the wet mixture with slow, sweeping strokes from the bottom of the bowl upward. Mix only until no dry streaks of flour remain. A few lumps are completely fine.
Overmixing develops gluten and will make the cake tough instead of tender. Stop the moment the flour disappears into the batter.

8. Assemble the Layers

Retrieve the streusel from the fridge. Divide it roughly in half visually. You don’t need to be precise.
Spoon half of the cake batter into your prepared baking pan, spreading it into an even layer with your spatula. Take care to push it into the corners.
Sprinkle half of the cold streusel evenly over the batter layer. It doesn’t need to reach the very edges since the batter will expand during baking.
Dollop the remaining batter on top of the streusel layer. Gently spread it out with your spatula to cover the streusel, working carefully so you don’t drag the streusel layer around too much. A gentle touch is all you need.
Sprinkle the remaining streusel evenly over the top of the cake.

9. Bake the Cake

Place the assembled pan in the preheated oven on the center rack.
Bake for 40 to 45 minutes. Start checking at the 38-minute mark by inserting a toothpick into the center of the cake. The cake is done when the toothpick comes out clean or with just a few moist crumbs (not wet batter) attached.
The top should be golden brown and the streusel should look set and slightly crisped. If the top is browning too quickly but the center isn’t done, tent the pan loosely with aluminum foil and continue baking.

10. Cool the Cake

Remove the pan from the oven and set it on a wire rack to cool for at least 20 minutes before attempting to lift or slice it. The cake needs time to firm up so it holds together when you cut it.
If adding the optional vanilla glaze, allow the cake to cool completely (about 1 hour) before drizzling. A warm cake will absorb the glaze instead of holding it on the surface.

11. Make the Optional Vanilla Glaze (Optional)

In a small bowl, sift 1 cup (120g) powdered sugar to remove any lumps.
Add 1/2 teaspoon vanilla extract and 2 tablespoons of heavy cream. Stir until a smooth, drizzleable glaze forms. Add the extra tablespoon of cream a little at a time until the consistency looks right for drizzling. It should fall off the spoon in a slow, steady stream.
Drizzle the glaze over the fully cooled cake in a back-and-forth motion.

12. Slice and Serve

Using the parchment overhang, lift the cake out of the pan and onto a cutting board.
Slice into 9 squares for generous portions, or 12 smaller pieces for a larger gathering.
Serve at room temperature with coffee, tea, or a cold glass of milk.

You might also enjoy: Sourdough Discard Lemon Loaf Recipe

Tips for Success

Small adjustments can take this cake from good to outstanding. These are the techniques that make the biggest difference in the final result.

Use cold butter for the streusel: Cold butter is the key to a properly crumbly, crunchy streusel topping. If you use softened or melted butter, the streusel will bake into a flat, greasy layer instead of a chunky, crumbly one.
Don’t overmix the batter: Once the flour goes in, mix only until the dry streaks disappear. Overmixing builds gluten and leads to a dense, tough crumb rather than a tender one.
Room-temperature ingredients for the batter: Softened butter, room-temp eggs, and room-temp sourdough discard all combine more smoothly and create a better emulsified batter.
Use full-fat sour cream: The fat content in full-fat sour cream adds richness and moisture. Low-fat sour cream contains more water and can negatively affect the texture.
Refrigerate the streusel while you make the batter: This keeps the butter cold in the crumble so it stays chunky during baking.
Check doneness with a toothpick, not time alone: Ovens vary, so start checking at 38 minutes. A toothpick with moist crumbs (not wet batter) means it’s done.
Weigh your flour: Scooping flour directly from the bag packs it down and can lead to too much flour in the batter, which dries the cake out. Spooning into a measuring cup or using a scale gives a more accurate result.

Serving Suggestions

This cake shines on its own but pairs especially well with warm beverages and simple accompaniments that complement its cinnamon-spiced flavor.

A warm slice alongside a bold drip coffee or a creamy latte is the classic pairing, and for good reason. The slight tang from the sourdough discard cuts beautifully through the richness of a milky coffee drink.

For a brunch spread, serve it alongside Sourdough Discard Waffles and fresh fruit for a table that looks impressively put together with very little extra effort.

Serve warm or at room temperature for the best texture and flavor.
Add a dusting of powdered sugar just before serving for a simple, elegant presentation.
Pair with a scoop of vanilla ice cream for an indulgent dessert version.
Serve with a spread of softened butter on the side for an extra-rich breakfast treat.
Slice into smaller squares and arrange on a platter for a brunch or holiday gathering.
Drizzle with warm honey just before serving for a floral sweetness that pairs beautifully with the cinnamon.

Variations to Try

Once you’ve made the base recipe, there are endless ways to customize this cake to suit the season or whatever you have in your pantry.

Blueberry streusel coffee cake: Toss 1 cup of fresh or frozen blueberries in 1 tablespoon of flour and fold them into the batter before assembling. The berries add pops of jammy flavor through the cake.
Apple cinnamon version: Peel and finely dice 1 medium apple and fold it into the batter. It adds a subtle fruitiness and extra moisture.
Pumpkin coffee cake: Replace 1/4 cup of the sour cream with pumpkin puree and add 1/2 teaspoon each of ground ginger and nutmeg to the batter.
Chocolate chip add-in: Fold 1/2 cup of mini chocolate chips into the batter for a sweeter, more dessert-forward version.
Lemon zest and poppy seed: Add 1 tablespoon of lemon zest to the batter and 1 teaspoon of poppy seeds for a bright, citrusy twist that works beautifully with the streusel.
Walnut streusel: Swap the pecans for chopped walnuts in the streusel for a slightly more bitter, earthy crunch.
Cardamom and orange: Add 1/2 teaspoon of ground cardamom to the streusel and 1 teaspoon of orange zest to the batter for a warmly aromatic variation.

Another favorite: Sourdough Discard Zucchini Bread Recipe

Storage and Reheating

This cake keeps beautifully and actually improves slightly in flavor on day two as the cinnamon and discard flavors meld together.

Room temperature: Store the cake in an airtight container or tightly wrapped in plastic wrap at room temperature for up to 3 days. The streusel topping will soften slightly by day two, but the cake stays moist.
Refrigerator: Store in an airtight container in the fridge for up to 5 days. Bring individual slices to room temperature before serving for the best texture, or warm them briefly.
Freezer: This cake freezes exceptionally well. Wrap individual slices tightly in plastic wrap and then in aluminum foil. Freeze for up to 2 months. Thaw overnight in the refrigerator or on the counter for a couple of hours.
Reheating: To reheat a slice, microwave it for 15 to 20 seconds until just warmed through. Alternatively, place slices on a baking sheet and warm in a 300°F (150°C) oven for about 8 minutes.
Add glaze after thawing: If freezing glazed slices, the glaze may not thaw beautifully. It’s better to freeze unglazed slices and add fresh glaze after reheating.

Nutritional Facts

The following values are estimates based on 9 servings per recipe, without the optional vanilla glaze.

Nutrient	Per Serving
Calories	435 kcal
Total Fat	22g
Saturated Fat	13g
Cholesterol	90mg
Sodium	280mg
Total Carbohydrates	56g
Dietary Fiber	1.5g
Total Sugars	32g
Protein	5g

Nutritional values are estimates and may vary based on specific ingredients and brands used.

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Health Benefits of Key Ingredients

While this is certainly a treat, a few of the core ingredients bring real nutritional value to the table.

Each ingredient here was chosen for more than just flavor. The sourdough discard, sour cream, and even the pecans add nutritional depth beyond what you’d find in a typical boxed coffee cake mix.

Sourdough discard: The fermentation process that creates sourdough discard helps break down some of the phytic acid in flour, which can make minerals like iron and zinc more bioavailable. The fermentation also introduces beneficial organic acids that may support gut health.
Sour cream: Full-fat sour cream provides fat-soluble vitamins A and D, along with calcium and phosphorus for bone health. The fat content also helps your body absorb the other fat-soluble nutrients in the recipe.
Eggs: Eggs are one of the most nutrient-dense foods available, providing complete protein, choline for brain health, vitamins B12 and D, and healthy fats. They’re responsible for much of the cake’s structure and richness.
Pecans: Rich in heart-healthy monounsaturated fats, pecans also provide manganese, magnesium, and antioxidants. They add crunch, flavor, and a small but meaningful nutritional boost to the streusel.
Cinnamon: Beyond its warm flavor, cinnamon contains compounds that may help support blood sugar regulation. Even the small amount used in the streusel contributes antioxidants.
Butter: Grass-fed butter, in particular, provides butyrate (a short-chain fatty acid that supports gut lining health) as well as vitamins A, E, and K2.

Read Also: Sourdough Discard Pancakes Recipe

Frequently Asked Questions

1. Can I use active sourdough starter instead of discard?

Yes, you can absolutely use active (fed) sourdough starter in place of discard. Because this recipe relies on baking powder and baking soda for lift rather than the starter itself, the distinction between active and discard is mostly about flavor. Active starter may give a slightly milder tang, while discard tends to have a more pronounced sour note. Both work well here.

2. What if I don’t have sour cream?

Full-fat plain Greek yogurt is the best direct substitute and can be swapped in a 1:1 ratio. It provides similar fat content and acidity, which helps activate the baking soda and keeps the crumb tender. Whole milk buttermilk also works, though the batter will be slightly thinner. Avoid using low-fat or non-fat versions of either, as they don’t provide enough fat to create the right texture.

3. Can I make this in a different pan size?

Yes. A 9-inch round cake pan is essentially the same volume and will work perfectly with identical baking time. If you use a 9×13 inch pan, the cake will be thinner. Reduce the baking time by about 10 minutes and start checking for doneness at the 28-minute mark. A loaf pan (9×5 inch) also works well, though you’ll need to increase the baking time by about 10 to 15 minutes. Always rely on the toothpick test rather than the clock.

4. My streusel sank into the cake. What happened?

This almost always comes down to the butter temperature. If the butter in your streusel was too warm (softened or melted rather than cold), it will blend into the batter rather than sitting on top as a distinct layer. Always use cold, cubed butter when making streusel, and refrigerate the mixture while you prepare the batter. Also, resist the urge to press the streusel down into the batter when assembling. Just sprinkle it gently and let it rest on the surface.

5. Can I make this recipe dairy-free?

Yes, with a few swaps it adapts well. Replace the butter in the cake and streusel with a solid coconut oil or a vegan block butter (such as Miyoko’s or Earth Balance). Replace the sour cream with full-fat coconut cream or a dairy-free plain yogurt. The texture will be slightly different, but the flavor is still wonderful. Skip the heavy cream in the glaze and use a splash of plant-based milk instead.

You might also enjoy: Sourdough Discard Chocolate Chip Cookies Recipe

Final Thoughts

This sourdough discard coffee cake recipe is one of those bakes you’ll come back to again and again. It’s simple, reliable, and somehow manages to be both comforting and impressive at the same time.

Every time you pull it out of the oven and that warm cinnamon smell fills the kitchen, it just feels like a good day.

If you give this recipe a try, leave a comment below and let me know how it turned out! Share a photo on social media and tag us. We love seeing your bakes.

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