Reese'S Chewy Chocolate Cookies
["1 1/4 c. margarine, softened", "2 c. sugar", "2 eggs", "2 tsp. vanilla", "2 c. flour", "3/4 c. cocoa", "1 tsp. baking soda", "1/2 tsp. salt", "1 (10 oz.) pkg. peanut butter chips", "1 c. pecans (optional)"]
["Combine butter and sugar.", "Beat until light and fluffy.", "Add eggs and vanilla; beat well.", "Stir together the flour, cocoa, baking soda and salt.", "Gradually blend into butter mixture.", "Stir in chips and nuts.", "Drop onto ungreased cookie sheet.", "Bake at 350\u00b0 for 8 to 9 minutes.", "Do not overbake.", "Cookies will be soft.", "(Will puff while baking and flatten while cooling.)", "Yields 4 1/2 dozen."]
["margarine", "sugar", "eggs", "vanilla", "flour", "cocoa", "baking soda", "salt", "peanut butter", "pecans"]