Dump Cake   

1 can Crushed, Pineapple
1 can Coconut
1 cup Pecans,chopped
1 Box dry yellow Cake Mix
1 1/2 sticks  Butter

Line pan with Pineapple;
Add Coconut;
Cake Mix; And Nuts in Layers.
Dot with Butter over top.

Bake at 350*F. for 45 mins.