This blueberry crumb cake recipe is a closely guarded secret of a famous restaurant. The cake is moist and fluffy, with a generous amount of blueberries in every bite. The crumb topping is buttery and sweet, adding a delightful crunch to the cake. To make this cake, you will need all-purpose flour, baking powder, salt, unsalted butter, granulated sugar, eggs, vanilla extract, sour cream, and fresh blueberries. The recipe is easy to follow and yields a delicious cake that is perfect for breakfast, brunch, or dessert.
