EASY PINEAPPLE UPSIDE-DOWN CAKE

1 stick butter
2 1/2 c. brown sugar
1 can pineapple slicesMaraschino cherries
1 yellow cake mix

Melt butter in oblong cake pan. Rotate pan spreading melted butter evenly and coating sides of pan. Sprinkle brown sugar in pan and pat down. Arrange pineapple slices on brown sugar. Place cherry in center of each pineapple ring. Mix yellow cake mix as directed, using reserved pineapple juice for water. Pour cake batter over pineapple rings. Bake as directed on cake mix, adding 5 minutes. Test for doneness by inserting toothpick in center of cake. Cool slightly then invert cake onto plate.

Source: http://www.therecipefinder.com