Reese's Chewy Chocolate Pan Cookies

1 1/4 c Butter or margarine,

-softened (2 1/2 sticks) 2 c Sugar

2 Eggs

2 t Vanilla extract

2 c All-purpose flour

3/4 c HERSHEY'S cocoa

1 t Baking soda

1/2 t Salt

1 2/3 c REESE'S peanut butter chips

Heat oven to 350'F. Grease 15.5x10.5x1" jelly-roll pan. In large mixer bowl, beat butter and sugar until light and fluffy. Add eggs and vanilla; beat well. Stir together flour, cocoa, baking soda and salt; gradually blend into butter mixture. Stir in peanut butter chips. Spread batter into prepared pan. Bake 20 minutes or until set. Cool completely in pan on wire rack; cut into bars. Makes about 4 dozen bars.