Blueberry Coffee Cake Recipe (with Video)

Preparation
1. First, preheat your oven to 375 degrees Fahrenheit.
2. Line an 8 inch by 8 inch baking dish with parchment paper.
Make the Cake Batter
1. In a bowl, add butter and sugar.
2. Use an electric mixer to cream together.
3. Then, add in the egg, lemon extract, and whole milk.
4. Stir to combine.
5. Add in the flour and baking powder.
6. Stir to combine.
7. Toss the blueberries in 1 tablespoon of flour.
8. This helps prevent them from sinking.
9. Very gently fold into the cake batter.
10. Add the cake batter to the parchment lined pan.
11. Carefully smooth into an even layer.
Make the Streusel Topping
1. Combine all streusel ingredients in a bowl.
2. Use a pastry cutter, a fork, or your fingers to mix together.
3. This mixture will be crumbly and not uniform.
4. Spread this streusel topping on top of the cake batter.
Baking
1. Bake in the preheated oven for 25 to 28 minutes or until a toothpick inserted comes out clean.
Final Steps
1. Finally, remove the coffee cake from the oven.
2. Fully cool before slicing into.