This recipe was clipped from a magazine and found in a large collection, date unknown. I’ve typed it below along with a scanned copy.

PEANUT BUTTER AND CHOCOLATE CHIP SQUARES

1 cup butter or margarine, softened
3/4 cup packed brown sugar
3/4 cup sugar
2 eggs
1/2 teaspoon vanilla
2 1/4 cups unsifted all-purpose flour
1 teaspoon baking soda
1/2 teaspoon salt
1 cup Hershey’s Semi-Sweet Chocolate Chips
1 1/2 cups Reese’s Peanut Butter Chips

Cream butter or margarine, brown sugar, sugar, eggs and vanilla until light and fluffy. Combine flour, baking soda and salt; add to creamed mixture. Combine Milk Chocolate Chips and Peanut Butter Chips; stir into batter. Spread mixture evenly into greased 15 1/2 x 10 1/2 x 1-inch jelly roll pan. Bake at 350° for 25 to 30 minutes or until golden brown. Cool in pan. Cut into bars. 48 cookies.