1/3 cup (45 grams) all purpose flour
1/3 cup (65 grams) granulated white sugar
1/2 teaspoon ground cinnamon
1/4 cup (56 grams) cold unsalted butter, cut into pieces
1 cup (130 grams) all purpose flour
1 teaspoon baking powder
1/8 teaspoon salt
1/4 cup (56 grams) (4 tablespoons) unsalted butter, room temperature
1/2 cup (100 grams) granulated white sugar
1 large egg
1/2 teaspoon pure vanilla extract
1/3 cup (80 ml) milk
2 cups fresh blueberries
Blueberry Cake Recipe: Preheat oven to 350 degrees F (177 degrees C). Butter, or spray with a nonstick vegetable spray, an 8 x 8 inch (20 x 20 cm) square pan or an 8 inch (20 cm) round cake pan.
For streusel topping: In a large bowl, mix together the flour, sugar, and ground cinnamon. Cut in the butter with a pastry blender or fork until it resembles coarse crumbs. Set aside while you make the cake batter.