Fruit Cocktail Upside Down Cake

1 pkg. Duncan Hines Lemon Supreme Deluxe Cake Mix

1/2 C butter or margarine

1 C brown sugar

1 can (1 lb. 12 oz.) fruit cocktail

Whipped cream, if desired

Melt butter in 13x9x2" pan. Sprinkle brown sugar evenly in pan. Drain fruit cocktail. Arrange fruit in sugar mixture. Mix cake as directed on label; spread batter over fruit. Bake at 350 about 45- 50 minutes, until cake tests done with a toothpick. Let stand 5 minutes for topping to begin to set. Then turn upside down onto a large platter or a cookie sheet. Serve pieces of cake topped with whipped cream.