Lightness in the Darkness Bars

1 cup margarine, softened
1 cup light brown sugar
2 large eggs
1 teaspoon vanilla extract
1 teaspoon baking powder
2 cups flour
1 cup chocolate chips

Chocolate Frosting

Grease and flour a 9x13in pan.

Melt the chocolate chips over low heat, stirring often. Cool.
Beat sugar and margarine until fluffy. Add vanilla and eggs; beat well. Stir in baking powder and flour until well  blended.

Transfer half the batter to another bowl. Stir the melted chocolate chips into remaining batter. Spread the chocolate batter into the pan. Top with the light batter. Bake at 350ºF oven for 30-40 min. Cool in pan. After cooling, add frosting.

Submitted by Barb