- 1 cup butter or margarine, melted
- 1/2 cup sugar
- 1/2 cup packed brown sugar
- 2 egg yolks
- 1 teaspoon water
- 1 teaspoon vanilla extract
- 2 cups all-purpose flour
- 1 teaspoon baking powder
- 1/4 teaspoon baking soda
- 1/4 teaspoon salt
- 1 cup semisweet chocolate chips
- 1 cup peanut butter chips
- TOPPING:
- 2 egg whites
- 1 cup packed brown sugar
- In a mixing bowl, cream butter and sugars. Beat in the egg yolks, water and vanilla; mix well. Combine the next four ingredients; gradually add to creamed mixture. Spread into a greased 13-in. x 9-in. x 2-in. baking pan. Sprinkle with chips and pat lightly.
- For topping beat egg whites in a mixing bowl on medium speed until soft peaks form. Gradually add brown sugar 2 tablespoons at a time, beating on high until stiff peaks form. Spread evenly over chips. Bake at 350 degrees F for 25-30 minutes or until golden brown. Cool on a wire rack. Cut into bars. Store in the refrigerator.