Pineapple Upside-Down Cake
["1/2 c. butter or margarine", "1 c. brown sugar, packed", "1 can crushed pineapple", "1 pkg. yellow cake mix"]
["Heat oven to 350\u00b0.", "Melt butter over low heat in cake pan 13 x 9 x 2-inches.", "Mix in brown sugar; drain pineapple and add to sugar mixture.", "Prepare cake mix.", "Pour over pineapple mixture. Bake 35 to 45 minutes.", "Place serving plate on top.", "Let cool a few minutes before turning over.", "Serve warm or cool, plain or with whipped cream."]
["butter", "brown sugar", "pineapple", "yellow cake mix"]