This blueberry cake recipe is perfect for lemon lovers. The cake is infused with lemon zest and juice, which gives it a bright and tangy flavor. The blueberries add a burst of sweetness and a pop of color. The secret to this recipe is using buttermilk in the batter. This makes the cake moist and tender. Serve it with a dusting of powdered sugar or a lemon glaze for a delightful dessert.