Doubly Chocolate Cookies
["1 c. butter or margarine, softened", "1 1/2 c. sugar", "2 eggs", "2 tsp. vanilla extract", "2 c. flour", "2/3 c. cocoa", "3/4 tsp. baking soda", "1/4 tsp. salt", "2 c. semi-sweet chocolate chips"]
["Heat oven to 350\u00b0.", "In a large mixing bowl, beat butter, sugar, eggs and vanilla until light and fluffy.", "Stir together flour, cocoa, baking soda and salt; add to butter mixture.", "Stir in chocolate chips.", "Drop by rounded teaspoonful onto an ungreased cookie sheet.", "Bake 8 to 10 minutes.", "Cool completely.", "Makes about 4 1/2 dozen cookies."]
["butter", "sugar", "eggs", "vanilla extract", "flour", "cocoa", "baking soda", "salt", "semi-sweet chocolate chips"]