Pineapple Upside Down Cake

1 package Miss Roben's Yellow Cake Mix

3 large eggs or appropriate egg replacement

3/4 cup margarine or butter- for cake batter

3/4 cup brown sugar

1/2 cup margarine or butter, melted

1 - 20 ounce can unsweetened sliced pineapple, drained(save juice)

Preheat oven to 350 degree F.  Prepare yellow cake mix batter using eggs(or substitutes) and 1/2 cup of the reserved pineapple juice.  Stir brown sugar into melted butter and spread the mixture evely in bottom of 9 x 13 inch glass pan.  Arrange drained pineapple in one layer across bottom of pan.  Pour batter over pineapple pieces.  Bake 30-40 minutes or until knife inserted into the center comes out clean(cover cake lightly with foil if browns on top before center is done).  Cool cake completely before inverting to serve.