Chewy Bars

¾cup Mazola or Nucoa margarine
½cup granulated sugar
½cup firmly packed brown sugar
½cup Karo dark corn syrup
1tablespoon vanilla
4cups quick oats
1(6-ounce) package semi-sweet chocolate chips
cup Skippy creamy or chunk style peanut butter

Grease 1 (13 × 9 × 2-inch) baking pan. Blend margarine and sugars in mixing bowl. Stir in corn syrup and vanilla, mixing well. Mix in oats. Pat dough into bottom of prepared pan, moistening hands to prevent sticking. Bake in 350°F. (moderate) oven 20 to 25 minutes. Cool slightly. Melt chocolate chips and peanut butter over boiling water, stirring constantly. Spread over baked layer. Chill to set chocolate. Cut into bars. Makes about 6 dozen (3 × ½-inch) bars.