Blueberry Crumb Cake
Soft, tender cake bursting with blueberries and topped with a buttery cinnamon crumb.

This wild blueberry crumb cake strikes the perfect balance between a soft, fluffy cake and a sweet, buttery cinnamon topping. The buttermilk gives the cake a tender crumb and just the right amount of tang, while fresh wild blueberries add juicy bursts of flavor in every bite.
It’s incredibly versatile—you can serve it for breakfast, brunch, dessert, or even a late-night snack. Dress it up with a scoop of ice cream or a drizzle of caramel sauce, or keep it simple with extra berries on the side. You can even swap in other berries, add nuts to the topping, or bake it as muffins or a loaf for a fun twist.
❤️ Why You’ll Love This Blueberry Buttermilk Crumb Cake
Tender and moist. Buttermilk keeps the cake soft with a delicate crumb.
Juicy wild blueberries. Fresh berries add bright flavor in every bite.
Sweet crumb topping. A buttery cinnamon streusel makes it extra special.
Versatile. Perfect for breakfast, brunch, dessert, or a coffee break treat.
How to Make Our Blueberry Crumb Cake
- Preheat your oven and grease and flour a 9-inch square pan.
- Beat the butter and sugar until light and fluffy, then mix in the egg and vanilla.
- Add the ingredients, alternating the dry mixture and buttermilk. Mix gently until smooth.
- Fold in the blueberries, being careful not to overmix.
- Spoon the batter into the pan and smooth it out evenly.
- Mix the streusel topping with butter, brown sugar, flour, and cinnamon, then sprinkle over the batter.
- Bake until golden and a toothpick inserted in the center comes out clean. Let cool before slicing.
Recipe Variations
- Use frozen blueberries. Toss frozen berries with 1 tablespoon of flour (don’t thaw) before folding into the batter to prevent streaking.
- Add citrus zest. Stir in a little lemon or orange zest for a bright citrusy note.
- Swap the berries. Use raspberries, chopped strawberries, or even a mix of berries instead of blueberries.
- Try dried fruit. Add a handful of chopped dried cranberries, cherries, or apricots for extra texture.
- Add nuts. Mix chopped pecans or walnuts into the topping for a crunchy twist.
- Flavor the topping. Swap cinnamon for cardamom or a pinch of nutmeg for a different spice profile.
- Make it muffins. Spoon the batter into lined muffin tins and bake at 375°F for about 18–22 minutes.
- Bake as a loaf. Pour into a greased loaf pan and bake at 350°F for about 50–60 minutes, tenting with foil if the topping browns too quickly.
Serving Suggestions
- Serve warm or at room temperature for breakfast, brunch, or dessert.
- Pair with coffee, tea, or a cold glass of milk.
- Dress it up with a scoop of vanilla ice cream, whipped cream, or even a drizzle of gooey caramel sauce.
- Add extra berries on the side for a fresh pop of flavor.
- Turn leftovers into a layered parfait with yogurt or whipped cream.
How to Store Blueberry Buttermilk Crumb Cake
Refrigerate. Store covered at room temperature for up to 2 days, or refrigerate for up to 5 days.
Freeze? Yes—wrap cooled slices individually and freeze for up to 2 months. Thaw at room temperature before serving.
To refresh. Warm slices briefly in the microwave or oven for that just-baked taste.
Blueberry Crumb Cake
A tender, buttery crumb cake filled with wild blueberries and topped with a sweet cinnamon streusel. Perfect for breakfast, brunch, or dessert with coffee or ice cream.
- Prep Time: 12 minutes
- Cook Time: 25
- Total Time: 37 minutes
- Yield: 16 servings 1x
- Category: cake, blueberries
- Method: Bake
- Cuisine: American
Ingredients
- 5 tablespoons unsalted butter, softened
- 3/4 cup granulated sugar
- 1 large egg
- 1 teaspoon vanilla extract or vanilla bean extract
- 2 cups (255 grams) all-purpose flour
- 1 1/2 teaspoons baking powder
- 1/4 teaspoon baking soda
- 1/2 teaspoon salt
- 1/2 cup buttermilk
- 2 cups fresh wild blueberries
For the Crumb Topping
- 4 tablespoons butter, room temperature
- 1/2 cup brown sugar
- 1/3 cup all-purpose flour
- 1/2 teaspoon ground cinnamon
Instructions
- Prep the oven and pan.
• Position a rack in the center of the oven and preheat it to 375°F. Grease and flour a 9-inch square baking pan. - Make the batter.
• Mix the butter, sugar, and eggs. Beat the butter and sugar together with an electric mixer until light and fluffy, or about 3 minutes. Add the egg and vanilla and beat until blended.
• Combine the flour, baking powder, and salt in a bowl and stir to blend. Add approximately one-third of the dry mixture to the first mixture, using half of the milk. Beat until smooth. Repeat this process with the remaining 1/3 of the dry mixture and the remaining milk. Add the last of the flour mixture and beat just until smooth.
• Fold the blueberries into the batter. - Spread the batter in the pan.
• Spoon the batter into the prepared baking pan and spread gently. - Make the topping.
• Combine 4 tablespoons of unsalted butter with the brown sugar, 1/3 cup of flour, and cinnamon; blend with a fork or your fingers to make the crumb topping.
• Sprinkle the topping mixture over the cake batter. - Bake the cake.
• Transfer the cake to the oven and bake for 25 to 35 minutes or until it springs back when lightly touched. A toothpick should come out clean when inserted into the center of the cake. - Serve.
• Slice the cooled cake and serve on small plates with extra berries or a scoop of ice cream.
Nutrition
- Serving Size:
- Calories: 205
- Sugar: 15.9 g
- Sodium: 109.3 mg
- Fat: 7.2 g
- Carbohydrates: 32.8 g
- Fiber: 1.3 g
- Protein: 2.6 g