1/2 c. (1 stick) butter, softened
1 c. granulated sugar
1/2 c. light brown sugar
2 eggs
1 tsp. vanilla extract
2 c. all-purpose flour
1/3 c. Hershey's cocoa
1 tsp. baking soda
1/2 tsp. salt
1 bag (12 oz. pkg.) Hershey's semi-sweet chocolate chips or 1 bag (10 oz. pkg.) Reese's peanut butter chips

Heat oven to 350°F.

In large mixer bowl, beat butter, granulated sugar and brown sugar until well blended. Add eggs and vanilla; beat well.

Sift together flour, cocoa, baking soda and salt. Gradually add to butter mixture, beating until well blended. Stir in chips. Drop by rounded teaspoonfuls onto ungreased cookie sheet.

Bake 9 to 11 minutes. Cool slightly; remove from cookie sheet.

Yields about 4 dozen cookies.