Gluten-Free Coffee Cake | Easy Recipe | Sour Cream Cake with Cinnamon Streusel Topping | Perfect Christmas Dessert
Prepare Pan and Heat Oven. Preheat oven to 350 degrees Spray an 9x9-inch square baking pan with nonstick cooking spray. (For a thicker coffee cake, use an 8x8-inch pan.)
Make the Streusel. Stir together the brown sugar, baking flour, and cinnamon in a small bowl. (You’ll use the butter later.)
Prepare the Cake Batter. Whisk together the baking flour and baking powder in a small bowl.
Spread Batter into Pan and Add Filling. Spread half the batter into the prepared pan. Sprinkle half the streusel mixture over the batter.
Add Remaining Batter and Top with Streusel. Spread remaining batter over the filling. Stir the melted butter into the remaining streusel topping. Sprinkle the streusel topping evenly over the cake.
Bake and Cool. Bake until a cake tester inserted into the center of the cake comes out clean, about 45 minutes.