Chocolate Meringue Bars

1/2 c Margarine
1/2 c Sugar
1/2 c Brown sugar
2 Eggs separated
1 ts Vanilla
2 ts Baking powder
1 ts Baking soda
1/2 ts Salt
3 tb Milk or water
6 oz Chocolate chips
1 c Brown sugar
1/2 ts Vanilla
1/2 c Nuts, optional Beat margarine, sugars, egg yolks, and 1 tsp. vanilla.
Mix dry ingredients, and add with milk. Spread in 9"x13" pan. Sprinkle with chocolate chips. Beat egg whites to soft peaks, beat in brown sugar and vanilla. Fold in nuts. Spread carefully over chips. Bake 30-35 min. at 325 degrees F.