Blueberry coffee cake is a delightful breakfast or brunch option that combines the sweetness of fresh blueberries with the richness of a moist cake, topped with a crunchy streusel or crumble.

This recipe is perfect for special occasions or a cozy weekend morning. Here’s a simple and delicious recipe to make a mouthwatering blueberry coffee cake.
Ingredients
For the Cake:
- 2 cups all-purpose flour
- 1 tsp baking powder
- 1/4 tsp baking soda
- 1/4 tsp salt
- 6 tbsp unsalted butter, room temperature
- 1 cup granulated sugar
- 2 large eggs
- 1 tsp vanilla extract
- 1 cup sour cream
- 2 cups fresh blueberries
- 1 tsp lemon zest (optional)
For the Streusel Topping:
- 1 cup all-purpose flour
- 1/3 cup granulated sugar
- 1/3 cup light brown sugar, packed
- 1/2 tsp cinnamon
- 1/2 cup unsalted butter, room temperature

For the Glaze (optional):
- 1/4 cup cream cheese, room temperature
- 1 tbsp unsalted butter
- 1/4 cup powdered sugar
- 1-3 tbsp milk
Instructions
- Preheat the Oven:
- Preheat your oven to 350°F (175°C). Grease and flour a 9×13-inch baking dish or line it with parchment paper.
- Make the Streusel Topping:
- In a medium bowl, combine the flour, granulated sugar, brown sugar, and cinnamon. Add the room temperature butter and use a fork or pastry cutter to work the butter into the dry ingredients until the mixture resembles coarse crumbs. Refrigerate for at least 15 minutes.
- Prepare the Cake Batter:
- In a large mixing bowl, whisk together the flour, baking powder, baking soda, and salt.
- In another bowl, whisk together the butter, sugar, eggs, vanilla extract, and sour cream until smooth.
- Gradually add the dry ingredients to the wet ingredients and mix until just combined. Be careful not to overmix.
- Gently fold in the blueberries and lemon zest if using.
- Assemble and Bake:
- Pour the batter into the prepared baking dish.
- Top the batter evenly with the streusel topping.
- Bake for about 45-50 minutes or until a toothpick inserted into the center comes out clean. Let it cool for a few minutes before slicing.
- Optional Glaze:
- If desired, prepare the glaze by mixing the cream cheese, butter, powdered sugar, and milk until smooth. Adjust the consistency by adding more milk if needed.
- Drizzle the glaze over the cooled coffee cake.

Tips and Variations
- Blueberry Selection: Use fresh blueberries for the best flavor and texture. If using frozen, thaw and pat dry before adding to the batter.
- Streusel Topping: You can adjust the amount of cinnamon or add other spices like nutmeg to the streusel for extra flavor.
- Glaze Options: Instead of cream cheese glaze, you can use a simple powdered sugar glaze or a vanilla glaze for a lighter taste.
Conclusion
This blueberry coffee cake is a perfect treat for any occasion, offering a delightful combination of flavors and textures. The sour cream adds moisture, while the streusel topping provides a satisfying crunch. Enjoy it warm with a cup of coffee or tea for a cozy morning treat.