1 1/4 c. butter, softened
2 c. sugar
2 eggs
2 tsp. vanilla extract
2 c. all purpose flour
3/4 c. Hershey's cocoa
1 tsp. baking soda
1/2 tsp. salt
2 c. (12 oz. pkg.) Reese's Peanut Butter Chips

Heat oven to 350 degrees. Grease 15 1/2" x 10 1/2" x 1" jelly roll pan. In large mixer bowl beat butter and sugar until light and fluffy. Add eggs and vanilla; beat well. Combine flour, cocoa, baking soda and salt; gradually blend into creamed mixture. Stir in chips. Spread batter into prepared pan. Bake 20 minutes or until set. Cool completely, cut into bars.