for more testy recipes ideas click my bio link Ingredients: 2 cups all-purpose flour • 1 ½ teaspoons baking powder • ½ teaspoon baking soda • ¼ teaspoon salt • ½ cup unsalted butter, softened • 1 cup granulated sugar • 2 large eggs • 1 teaspoon vanilla extract • 1 cup sour cream • 1 ½ cups fresh blueberries • For the streusel topping: ¼ cup all-purpose flour • ¼ cup granulated sugar • 2 tablespoons unsalted butter, chilled • Instructions: 1. Preheat your oven to 350°F (175°C). Grease a 9-inch round cake pan or line it with parchment paper. 2. In a medium bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside. 3. In a large bowl, cream together the softened butter and granulated sugar until light and fluffy. You can use an electric mixer or do thi