n n n In the bottom of a 9×13 baking dish, pour one box of yellow cake mix.n n n n Spread the blueberries over the top of the cake mix.n n n n Sprinkle on 1-2 tablespoons of sugar (depending upon how sweet they are)n n n n Pour 1 1/4 cup of water over the top of the berries and cake mix. Gently toss the berries and cake mix to allow the water to settle towards the bottom of the pan. (Sometime I give it a little shake too) If they berries aren’t very juicy, add just a little more water. If they are plump, a little less.n n n n Cut a stick of butter into 8 pieces and spread out over the top.n n n n Bake at 350 for 45-50n nn