Blueberry Citrus Cake recipe - super simple cake recipe that is bursting with citrus flavor! The base of the cake starts with a box of lemon cake mix! Lemon cake mix, vanilla pudding, eggs, sour cream, vegetable oil, lemon zest, orange juice, orange zest, and fresh blueberries. Top the cake with a quick lemon glaze. Great for dinner parties, potlucks, and cookouts. This recipe is always a crowd pleaser!