Blueberry Coffee Cake with Sour Cream
Inside: The secret to an ultra-moist blueberry coffee cake? Sour cream in the batter—plus a generous brown sugar cinnamon streusel that takes it over the top.
This blueberry coffee cake is the kind you make once and keep coming back to—soft, tender, and loaded with juicy berries. It’s a sour cream blueberry coffee cake, which means the crumb stays moist and delicate, while a thick brown sugar cinnamon streusel adds that classic crumb topping everyone expects (and goes back for).
The unusual method for blueberry and sour cream coffee cake
Instead of the traditional creaming method, this recipe uses reverse creaming for a more consistent, bakery-style result. Butter is blended into the dry ingredients first, coating the flour and limiting gluten development for a finer, more tender crumb. Then a rich mix of sour cream and egg yolks brings everything together into a thick batter that bakes up soft, moist, and evenly textured—no overmixing, no exaggerated dome, just a beautifully balanced blueberry crumb coffee cake.
It’s the balance that makes it work: not overly sweet, plenty of blueberries, and enough streusel to make it feel like a true blueberry streusel coffee cake without overwhelming the cake itself.
And if streusel-topped coffee cakes are your thing, you’ll want to bookmark my Cinnamon Streusel Coffee Cake (New York style), Lemon Strawberry Crumb Cake, and Mixed Berry Buckle (Streusel Coffeecake) for more sweet brunch recipes.
Why this blueberry sour cream coffee cake works:
- A moist, tender crumb–Sour cream adds fat and acidity, which keep this blueberry breakfast cake soft without making it heavy, and it breaks down gluten just enough for a finer, more delicate texture.
- Cake Flour– for the batter creates a finer, more delicate crumb.
- Reverse creaming–Mixing the butter into the dry ingredients first coats the flour with fat, limiting gluten development. The result is a velvety, even crumb—and a batter that comes together quickly with less risk of overmixing.
- A balanced batter lets the fruit shine–The cake itself isn’t overly sweet, so the blueberries stand out instead of getting lost. You get pockets of jammy fruit in every bite, not just sweetness.
- A thick brown sugar streusel–The crumb topping makes this blueberry coffee cake an occasion in itself. It bakes into a rubbly, buttery cinnamon-spiked crumb that’s irresistible atop the blueberry cake.
- Even baking–Thanks to the reverse creaming method, the cake bakes up level instead of domed—perfect for holding that generous layer of streusel without it sliding off.
Ingredients for Blueberry Coffee Cake:
- All-purpose flour–I use King Arthur Unbleached All-Purpose flour, as the base for the streusel topping.
- Light brown sugar–For a lightly sweet molasses note in the crumble topping.
- Cinnamon–Ensure your cinnamon is fresh (<1 year old) for the best flavor.
- Salt–Adding just a small amount enhances the flavor in both the crumble and cake. Don’t skip it.
- Unsalted Butter–Use melted butter for the streusel topping and room temperature butter for the blueberry cake.
- Egg yolks – Add richness, and contribute to a tender, velvety crumb. They also enhance the cake with a soft yellow color.
- Sour cream – The key to a moist, soft cake with a slight tang that balances the sweetness.
- Vanilla extract – Rounds out the flavor and enhances both the cake and the blueberries.
- Cake flour – Lower protein than all-purpose flour, which keeps the coffee cake light.
- Granulated sugar – Creates a soft texture and lightly sweetens the cake.
- Baking powder–Is double-acting; first when the wet ingredients are added and then it reacts with the heat when baking.
- Baking soda–Activated by the sour cream to boost rise and improve browning.
- Blueberries – Bring bursts of juicy sweetness and a little acidity to balance the cake.
Step-by-step instructions:
- In a small bowl, combine the all-purpose flour, brown sugar, cinnamon, and salt. Mix well to combine, then stir in the melted butter until no dry bits of flour remain. You may want to use your clean hands for the final mix; the crumble should stick together in clumps when pressed. Set aside.
2. In a small bowl, combine the egg yolks, sour cream and vanilla. Stir until smooth and creamy. Set aside.
3. In a large bowl, combine the cake flour, sugar, baking powder, baking soda and salt; whisk to combine, then add the room temperature butter.
4. Use an electric mixer on low speed to beat the butter into the dry ingredients. Then increase the speed to high and beat for 1½ minutes to fully aerate and lighten the mixture. Use a rubber spatula to scrape the sides occasionally.
5. Add the egg yolk mixture to the flour and butter mixture in 3 separate additions, mixing thoroughly for 20-30 seconds after each.
6. The coffee cake batter should be quite thick and light-colored.
7. Fold the blueberries into the batter.
8. Transfer the blueberry coffee cake batter to a prepared 9-inch springform pan.
9. Sprinkle the cinnamon streusel evenly over the top.
10. Bake for 50-60 minutes or until a toothpick inserted in the center comes out clean. Rest the cake for 5-10 minutes in the pan, then remove the collar and let it cool.
3 Mistakes To Avoid:
- Using cold ingredients–Cold butter won’t incorporate properly with the reverse creaming method. For the best results, use room temperature ingredients to avoid a lumpy batter.
- Overmixing once the liquid is added–Reverse creaming gives you a head start on texture—but once the wet ingredients go in, mix just until combined. Overmixing can make the cake dense instead of soft and velvety.
- Using oversized blueberries–Large berries tend to sink, creating uneven pockets. Use smaller blueberries when possible.
Methods for preventing blueberries from sinking to the bottom:
I tried multiple methods that claim to prevent the blueberries from sinking in the batter as it bakes and they all work–to varying degrees.
- Method 1: Lightly dusting the fruit with flour and folding it into the batter–supposedly the granules of flour help keep the fruit suspended during the bake. The results are okay, but not great. Does it keep some of the berries suspended? Yes, to a degree, but the majority will find their way towards the bottom of the pan.
- Method 2: Spreading half of the batter into the pan and folding the berries into the other half before filling up the cake pan. The idea is that you create a “berry-free” layer that the fruit in the upper reaches would have to penetrate and theoretically keep them evenly spaced throughout. Again, the results were mixed with a mostly berry-bottom and a few berries scattered on top.
- Method 3: Look for wild Maine blueberries, which are about half the size of conventional ones with a more intense flavor and less water, so they weigh less (and sink less). Because wild blueberries have a short harvest season and are grown primarily in the Northeast, they’re typically sold flash-frozen rather than fresh in many parts of the country—look for Wyman’s of Maine in the frozen foods section.
- Method 4: Ensure you have a thick batter to buoy the berries. This batter was plenty thick, nearly to the point of a thick buttercream frosting, but that didn’t seem to matter.
My observations conclude that the smaller and lighter the fruit, the less likelihood of sinking to the bottom of the pan. That said, it’s a blueberry coffee cake and certainly not the end of the world should they puddle at the bottom. Chalk it up to delicious imperfection and cut another slice.
Swaps and Variations:
- Add 1 tablespoon of fresh lemon zest to the batter (before adding the blueberries for a Lemon Blueberry Coffee Cake. This gives hints of lemon without overpowering the cake.
- Drizzle a simple confectioner’s sugar glaze (1 cup powdered sugar + 2-3 tablespoons of milk or half-and-half) over the cooled cake for extra pizzazz.
- Try a lemon glaze: add 1 to 2 tablespoons of milk or half-and-half, mix well, then stir in 2-3 teaspoons of lemon juice.
- Don’t own a springform? Use a different pan–I recommend a 9-inch cake pan with 3″ high sides. Spray the pan well with vegetable spray and line the bottom with parchment paper. Let the cake cool completely after baking, and then carefully flip it out onto a flat plate. Immediately place a cake plate on top and flip it upright, so the streusel is on top. If you lose some crumbs during the transfer, just sprinkle them back over the top.
FAQs
Sour cream gives the cake a richer, moister crumb. It also reacts with the baking soda in the recipe to give extra lift.
A soft, moist crumb, special mix-ins like fruit, nuts or chips and a special topping, such as a crumble or glaze, are hallmarks of a classic coffee cake recipe.
Make ahead:
- You can make the sour cream blueberry coffee cake a day ahead. Wrap it well in Saran Wrap or store in an airtight cake container.
Storage:
- Store leftovers at room temperature for up to two days; beyond that, cover and refrigerate.
Freezing:
- You can freeze a whole blueberry streusel coffee cake or pieces of it.
- Wrap well in plastic wrap and freezer paper for up to 2-3 months.
- Defrost before enjoying.
More coffee cake recipes:
Blueberry and Sour Cream Coffee Cake
SPECIAL EQUIPMENT:
- 1 9-inch springform pan
INGREDIENTS:
FOR STREUSEL TOPPING:
- 1¼ cups all purpose flour
- ½ cup light brown sugar
- 1⅛ teaspoon cinnamon
- ⅛ teaspoon salt
- 8 tablespoons unsalted butter melted
FOR BLUEBERRY AND SOUR CREAM COFFEE CAKE:
- 4 large egg yolks
- ⅔ cup sour cream
- 1½ teaspoons vanilla extract
- 2 cups sifted cake flour
- 1 cup sugar
- ½ teaspoon baking powder
- ½ teaspoon baking soda
- ¼ teaspoon salt
- 12 tablespoons unsalted butter at room temperature
- 1½ cups blueberries
DIRECTIONS:
FOR THE STREUSEL TOPPING:
- Preheat the oven to 350°F. Spray a 9-inch springform pan with vegetable spray, then line the bottom with a piece of parchment paper cut to fit the pan. Spray the parchment in the pan and set it aside.
- In a medium bowl, combine 1¼ cups all purpose flour, ½ cup light brown sugar, 1⅛ teaspoon cinnamon, ⅛ teaspoon salt and mix until evenly combined. Add 8 tablespoons unsalted butter and mix until there are no dry bits remaining. For the last bit, it may be easier to use your clean hands to mix the streusel. Set aside.
FOR THE BLUEBERRY AND SOUR CREAM COFFEE CAKE BATTER:
- In a small bowl combine the ⅔ cup sour cream, 4 large egg yolks, and 1½ teaspoons vanilla extract. Stir or whisk until combined and smooth. Set aside.
- In a large mixing bowl, sift 2 cups cake flour, ½ teaspoon baking powder, ½ teaspoon baking soda, and ¼ teaspoon salt. Whisk in 1 cup sugar.
- Once the dry ingredients are well mixed, add 12 tablespoons unsalted butter and use a hand mixer or stand mixer on low speed to slowly incorporate the butter with the dry ingredients.
- Increase the speed and beat for 1½ minutes to aerate and develop the cake's structure, scraping down the sides of the bowl with a spatula occasionally.
- When the flour mixture is well combined and has a light sandy look, begin adding the sour cream mixture in 3 separate additions, mixing each for 20-30 seconds and scraping the bowl.
- Add about ⅓ of the cake batter to the springform pan and spread it into an even layer.
- Fold 1½ cups blueberries into the remaining sour cream cake batter. Then transfer the batter to the springform pan and spread it into an even layer.
- Top the batter with the streusel mixture, evenly spreading it across the top. Bake for 45 minutes, then rest a sheet of aluminum foil over the top to prevent the streusel from becoming too dark. Bake for another 15-20 minutes or until a cake tester inserted into the center of the cake comes out clean.
- Transfer the springform pan to a wire cake rack and rest it for 10-15 minutes. Run a sharp knife around the inside perimeter of the pan to loosen the edges. Remove the sides and cool the cake to room temperature.
- Can be served immediately but for the most moist crumb, let it rest overnight tightly covered in plastic wrap
RECIPE VIDEO:
NUTRITION:
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