This orange blueberry crumb cake recipe is a bright and flavorful twist on the classic. The cake is moist and citrusy, with a sweet blueberry filling and a crunchy orange crumb topping. To make the cake, you'll need flour, sugar, baking powder, salt, butter, eggs, milk, orange zest, orange juice, vanilla extract, and fresh blueberries. Mix the dry ingredients together, then add the wet ingredients and mix until smooth. Fold in the blueberries and pour the batter into a greased baking dish. To make the crumb topping, mix flour, sugar, butter, and orange zest until crumbly, then sprinkle over the cake batter. Bake for 40-45 minutes, or until a toothpick inserted into the center comes out clean. Serve warm or at room temperature.
