Chocolate-Peanut Butter Bars
["1 c. peanut butter", "6 Tbsp. margarine, softened", "1 1/4 c. sugar", "3 eggs", "1 tsp. vanilla extract", "1 c. flour", "1/4 tsp. salt", "2 c. chocolate chips"]
["Cream peanut butter and margarine in mixer bowl until light and fluffy.", "Add sugar, eggs and vanilla; beat until creamy.", "Stir in flour, salt and 1 cup chocolate chips.", "Spread in ungreased 9 x 12-inch baking pan.", "Bake at 350\u00b0 for 25 to 30 minutes, or until edges begin to brown.", "Top with remaining 1 cup chocolate chips. Let stand for 5 minutes.", "Spread melted chocolate over top.", "Cool completely.", "Cut into bars.", "Yields 18 servings."]
["peanut butter", "margarine", "sugar", "eggs", "vanilla extract", "flour", "salt", "chocolate chips"]