This banana blueberry cake recipe is perfect for those who love the combination of blueberries and bananas. The cake is made with ripe bananas, fresh blueberries, butter, sugar, eggs, flour, and baking powder. The batter is mixed until smooth and then baked in the oven until golden brown. The result is a moist and delicious cake that's perfect for any occasion. Serve it with a sprinkle of fresh blueberries or a dollop of whipped cream for an extra special touch.