Preparation / Directions:
In a small bowl, combine the flour and baking powder. In a medium mixing bowl, beat the egg whites and egg with an electric mixer on high speed for 4 minutes. Gradually add the sugar, beating until light and fluffy. Add the flour mixture and beat until just combined. In a small saucepan, heat and stir the milk and 2 tablespoons margarine until the margarine melts. Add to the batter, beating until combined. Pour over the pineapple. Bake for 30 to 35 minutes, or until the cake tests done. Cool in the pan for about 5 minutes. Loosen the sides and invert the cake onto a serving plate. Serve warm.