Blueberry Crunch Cake

When we are cooking out at the neighbors, this is a must for me to bring.  I change the fruit sometimes to blackberries or cherries. It is always grabed out of my hands when I bring it in. It is very easy and so yummy.

1 20 oz. can crushed pineapple in juice
1 21oz. blueberry pie filling
1 18.5 oz. box butter recipe yellow cake mix
1 cup chopped pecans
3/4 cup melted butter

Pour pineapple into a 9x13 baking dish. Spread evenly over bottom of dish. Spoon pie filling over pineapple. Sprinkle cake mix, then pecans and drizzle butter over top and bake 350 for 35 to 40 minutes.