1/4 cup margarine
1/2 cup sugar
1 beaten egg
1 1/2 cup flour
1 tsp baking powder
Cream margarine and sugar. Add egg, beat. Add flour, baking powder, salt and vanilla.
Sprinkle half the mixture in a square pan. Sprinkle the mixture with strawberry jam. Sprinkle the rest of the mixture over jam. Sprinkle all with granulated sugar.
Bake at 350° for 35-45 minutes.