1 regular-size can crushed pineapple
2 cans blueberry pie filling
1 box spice cake mix
2 sticks margarine
In a 9 x 13-inch baking pan dump the pineapple and spread evenly.
Layer the blueberry pie filling over the pineapple and spread out evenly.
Dump the dry cake mix over the pie filling and spread out evenly.
Cut both sticks of margarine into small pats and place across the top of the cake mix.
Bake cake in a preheated 350 degree oven for 45 minutes.