1. Preheat oven to 350ºF.
2. Pour blueberry pie filling in oblong cake dish.
3. Pour pineapple,
juice and all, spread evenly again.
4. Sprinkle all of the cake mix on top of the filling to completely cover.
Slice butter into squares and place evenly all over cake mix.
6. Add the pecans.
7. Bake for 45 minutes.
8. Cool for ten minutes.