Pineapple Upside Down Cake

1 cup brown sugar
1/4 lb. butter
1 can sliced pineapple
3 eggs, seperated
1 cup white sugar
8 Tbsp. pineapple juice
1/4 tsp. vanilla
1 1/8 cups flour
1 tsp. baking powder

Melt brown sugar and butter in iron skillet. Stir often to prevent burning. When melted, add slices of pineapple. Beat yolks of eggs, add sugar, pineapple juice, vanilla, flour, and baking powder. Fold in beaten egg whites. Pour over mixture in skillet and bake at 350 degrees for 50 minutes. Turn upside down while hot on large plate. Serve with whipping cream.