Pineapple-Pecan Upside-Down Cake
["1/2 c. butter or margarine", "1 c. firmly packed brown sugar", "1 (15 1/2 oz.) can pineapple slices (undrained)", "1/4 c. pecan halves", "3 eggs, separated", "1 c. sugar", "1 c. sifted cake flour", "1 tsp. baking powder", "1/8 tsp. salt"]
["Melt butter.", "Sprinkle evenly with brown sugar.", "Drain pineapple, reserving 1/3 cup pineapple juice.", "Set juice aside. Arrange pineapple slices in single layer over brown sugar.", "Place pecan half in center of each pineapple slice; set aside."]
["butter", "brown sugar", "pineapple", "pecan halves", "eggs", "sugar", "cake flour", "baking powder", "salt"]