Pour the pineapple juice in a separate cup.

Pour the pineapple slices into a square glass baking dish.

Cut the slices into thirds.

Pour the cake mix on top of the pineapple slices.

Smooth the cake mix so that it isn’t real lumpy.

Cut the stick of butter into slices and place them on top of the cake mix.

Gently pour a little of the juice along the sides and in between the butter slices (about 1/4 cup).

Bake for 35-40 minutes at 350. If it’s still too moist, bake five or ten minutes longer.