Pineapple Loaf Cake

1/2 cup margarine
1 1/2 cups sugar
1/2 tsp vanilla
1 cup crushed pineapple undrained
2 1/2 cups cake flour
1 tbsp baking powder
Dash salt
1/4 cup water
3 egg whites beaten until stiff

Cream margarine with sugar and vanilla until fluffy. Add pineapple.
Sift dry ingredients together, add to creamed mixture alternately with water. Fold in egg whites, pour into a greased and floured loaf pan. Bake at 350 degrees for about 1 hour, or until done. Glaze with a powdered sugar glaze, if desired.