1 cup (2 sticks) butter or margarine, softened
1-1/2 cups sugar
2 eggs
2 teaspoons vanilla extract
2 cups flour
2/3 cup cocoa
3/4 teaspoon baking soda
1/4 teaspoon salt
2 cups (12 oz. pkg. chocolate chips)
1/2 cup coarsely chopped nuts, optional

Heat oven to 350. In 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 and nuts. Drop by rounded teaspoonfuls onto ungreased cookie sheet. Bake 8-10 minutes or just until set. Cool slightly. Remove from cookie sheet to wire rack. Cool completely. Makes about 4-1/2 dozen cookies.