Dessert

Heavenly Blueberry Coffee Cake Recipe

ByMaya bella September 18, 2026September 18, 2026

Introduction

This Heavenly Blueberry Coffee Cake is a delightful treat perfect for breakfast or an afternoon snack. Moist, tender, and bursting with fresh blueberries, it’s topped with a crumbly cinnamon streusel that adds just the right amount of sweetness and crunch.

A single slice of crumb-topped blueberry cake is placed on a white plate, showing three distinct layers: a golden brown crumbly top sprinkled with fresh blueberries, a light beige moist cake layer filled with cooked blueberries, and a slightly darker golden brown baked edge forming the base. Behind the slice, the remaining round cake with the same crumbly top and blueberries is visible on another white plate. In the background to the right, a white ceramic jug adds to the simple setting, all set on a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Ingredients

2 cups all-purpose flour
3/4 cup granulated sugar
1/2 cup butter, softened
2 eggs
2 teaspoons baking powder
1/2 teaspoon salt
1/2 cup sour cream
1 to 1 1/2 cups blueberries
1/4 cup brown sugar
1 teaspoon cinnamon (for streusel)
1 teaspoon vanilla extract

Instructions

Step 1: Preheat your oven to 350°F (175°C). Grease a 9×9 inch square baking pan with butter or cooking spray.
Step 2: Prepare the streusel topping by mixing 1/4 cup granulated sugar, 1/4 cup brown sugar, and 1 teaspoon cinnamon in a small bowl. Cut in 1/4 cup (1/2 stick) softened butter with a pastry cutter or fork until the mixture looks like coarse crumbs. Set aside.
Step 3: In a large bowl, cream together 1/2 cup softened butter and 3/4 cup granulated sugar until light and fluffy.
Step 4: Beat in the eggs one at a time until fully combined, then stir in 1 teaspoon vanilla extract.
Step 5: In a separate bowl, whisk together the flour, baking powder, and salt.
Step 6: Gradually add the dry ingredients to the wet mixture, alternating with the sour cream, beginning and ending with the dry ingredients. Stir gently until just combined to avoid overmixing.
Step 7: Carefully fold in the blueberries so they are evenly distributed through the batter.
Step 8: Pour the batter into the prepared pan and spread it out evenly.
Step 9: Sprinkle the streusel topping evenly over the batter.
Step 10: Bake for 30 to 40 minutes, or until a toothpick inserted in the center comes out clean.
Step 11: Allow the cake to cool in the pan for 10 to 15 minutes, then transfer it to a wire rack to cool completely before slicing and serving.

Tips & Variations

Swap sour cream with plain Greek yogurt for a lighter texture and tangy flavor.
Use frozen blueberries if fresh are out of season; just add them directly without thawing to prevent color bleed.
For extra crunch, sprinkle chopped nuts like walnuts or pecans on top of the streusel before baking.
Add a teaspoon of lemon zest to the batter to brighten the blueberry flavor.

Storage

Store the coffee cake in an airtight container at room temperature for up to 2 days. For longer storage, refrigerate for up to 5 days or freeze for up to 2 months. Reheat slices gently in the microwave or oven before serving to regain warmth and softness.

How to Serve

A slice of blueberry crumb cake sits on a white plate against a white marbled surface. The cake has three visible layers: a moist, light golden brown crumb cake base with dark purple blueberries mixed inside, a middle section filled with more juicy, whole blueberries that create purple patches, and a crumbly, golden-tan streusel topping with scattered blueberries adding texture and color on top. The crumb topping looks crisp and crumbly, contrasting with the soft inside. In the background, the larger whole cake is on a white plate, showing the same golden outer crust and crumb topping. Photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use frozen blueberries instead of fresh?

Yes, frozen blueberries work well in this recipe. Use them directly from the freezer without thawing to prevent the batter from turning blue or watery.

How do I prevent the streusel topping from sinking?

Make sure your batter is thick enough and evenly spread in the pan before sprinkling the streusel on top. Also, avoid mixing the streusel into the batter to keep it on the surface where it crisps up nicely during baking.