Pineapple Upside-Down Cake - cooking recipe

Ingredients

1 stick butter
1 c. brown sugar
1 can crushed pineapple, drained (reserve juice)
1 box Pillsbury yellow cake mix

Preparation

Melt butter in bottom of 9 x 13-inch cake pan.
Pour brown sugar over butter.
Add drained pineapple.
Mix cake mix using pineapple juice plus enough water to equal amount called for by mix.
(Optional:
Can use rum to equal liquid instead of water.) Bake as directed.
Turn cake out of pan when done.
Serve with Cool Whip.