Reese'S Chewey Chocolate Cookies
["1 1/4 c. butter, softened", "2 c. sugar", "2 eggs", "2 tsp. vanilla", "2 c. unsifted all-purpose flour", "3/4 c. cocoa", "1 tsp. baking soda", "1/2 tsp. salt", "2 c. (12 oz. pkg.) peanut butter chips"]
["Preheat oven to 350 degrees.", "Cream butter and sugar in large mixing bowl until light and fluffy.", "Add eggs and vanilla; beat well.", "Combine flour, cocoa, baking soda and salt; gradually blend into creamed mixure.", "Stir in peanut butter chips.", "Drop by teaspoonful onto ungreased cookie sheet.", "Bake at 350 degrees for 8 to 9 minutes.", "Do not overbake!", "Cookies will be soft; they will puff during baking and flatten upon cooking.", "Cool until set, about one minute.", "Remove from cookie sheet and allow to cool completely on wire rack."]
["butter", "sugar", "eggs", "vanilla", "flour", "cocoa", "baking soda", "salt", "peanut butter"]