Chewy Chocolate Pan Cookies 4 dozens 1 1/4 cups butter 2 cup sugar 2 eggs 2 teaspoons vanilla extract 2 cup flour 3/4 cup Hershey's cocoa 1 teaspoon baking soda 1/2 teaspoon salt 2 cup peanut butter chips Heat oven to 350. Grease 15 1/2 x 10 1/2 x 1 inch 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.