These easy homemade mixed berry muffins are moist, light, and fluffy muffins made with buttermilk, frozen mixed berries, and a touch of lemon zest for brightness. No mixer required, meaning you can have a fresh batch of bakery style mixed berry muffins in a flash! This mixed berry muffins recipe can also be made with fresh berries if you prefer. | mixed berry muffins with frozen berries | mixed berry muffins fresh berries | mixed berry muffins recipes