Blueberry Breakfast Cookies! You will need: Two 7oz. boxes of Jiffy blueberry muffin mix 2/3 cup heavy 1/2 teaspoon baking powder 2 tablespoons softened butter (not melted) Heat oven to 400 degrees. Mix ingredients slowly until it has the consistency of biscuit dough. Then roll them into six oval/circle shapes, place on cookie sheet & put in the oven for 15-17mins. Once they are a golden brown take out and put on cooling rack until cool. Your kids will love them!