2 cups sugar 
2 sticks butter, softened 
3 cups plain flour 
1 tblsp baking powder 
3/4 cup milk 
1 tblsp vanilla 
6 egg whites, stiffly beaten 
Filling(recipe follows) 

Cream sugar and butter together until light and fluffy. Combine flour and baking powder. Add alternately with milk to sugar mixture, beginning and ending with flour mixture. Add vanilla. Gently fold in egg whites. Divide batter among three greased and floured 8-inch cake pans. Bake at 350° for 20 minutes, or until layers test done. Remove from pans and cool. Spread filling between layers and on top and sides of cake. 

Filling
3 tblsp plain flour 
1 1/2 c sugar 
1 (20-ounce) can crushed pineapple, undrained 
6 egg yolks 
1 stick margarine 

In a saucepan, stir flour and sugar together. Add pineapple and egg yolks, blending well. Add margarine. Cook over medium-high, stirring, until mixture boils and thickens, 5-10 minutes.