# What You Need:
→ Cake
01 - 1 1/2 cups all-purpose flour
02 - 1/2 cup granulated sugar
03 - 1/4 cup unsalted butter, softened
04 - 1 large egg
05 - 1/2 cup whole milk
06 - 2 teaspoons baking powder
07 - 1/2 teaspoon salt
08 - 1 teaspoon vanilla extract
09 - 2 cups fresh blueberries
→ Streusel Topping
10 - 1/2 cup all-purpose flour
11 - 1/2 cup packed light brown sugar
12 - 1/2 teaspoon ground cinnamon
13 - 1/4 cup unsalted butter, cold and cubed
14 - Pinch of salt
# Directions:
01 - Set oven to 350°F. Grease a 9-inch square baking pan and line with parchment paper.
02 - Whisk together flour, baking powder, and salt in a medium bowl; set aside.
03 - In a large bowl, beat softened butter with granulated sugar until light and fluffy. Add egg and vanilla extract; mix well.
04 - Alternate adding flour mixture and milk to the creamed butter mixture, beginning and ending with the flour. Stir gently until just blended.
05 - Carefully fold fresh blueberries into the batter to avoid breaking them.
06 - Pour batter into prepared pan and smooth the surface evenly.
07 - Combine flour, brown sugar, cinnamon, and salt. Cut in cold butter using a pastry blender or fork until mixture resembles coarse crumbs.
08 - Evenly sprinkle streusel topping over the batter.
09 - Bake for 40 to 45 minutes until a toothpick inserted in the center comes out clean and topping is golden.
10 - Allow to cool in pan for at least 20 minutes before slicing and serving.
