Ingredients

  • 1 cup peanut butter
  • 23 cup margarine, softened
  • 1 teaspoon vanilla
  • 2 cups light brown sugar, packed
  • 3 eggs
  • 1 cup flour, sifted
  • 12 teaspoon salt
  • 34 cup powdered sugar, sifted
  • 2 teaspoons water
  • 14 cup chocolate chips
  • 1 teaspoon shortening

Method

  • Heat oven to 350 degrees.
  • Grease 13x9 pan.
  • Combine peanut butter, margarine, and vanilla in a large bowl.
  • Cream well.
  • Beat in brown sugar til light and fluffy.
  • Add eggs one at a time, beating well after each.
  • Blend in flour and salt.
  • Spread batter in prepared pan.
  • Bake 30-35 minutes or til center springs back when lightly touched.
  • Cool slightly in pan on wire rack.
  • Mix powdered sugar with water in small bowl, stil til smooth.
  • Drizzle from spoon over cookies in pan; swirl with back of spoon to make random pattern.
  • Melt chocolate chips and shortening over simmering water in top of double boiler.
  • Drizzle over the white glaze for black and white zig zag pattern.
  • When cool, cut into rectangles.