1 c. butter
1 1/2 c. sugar
2 eggs
2 tsp. vanilla
2 c. flour
2/3 c. Hershey's cocoa
3/4 tsp. baking soda
1/2 tsp. salt
1 (12 oz.) pkg. Reese's peanut butter chips

Cream butter, sugar, eggs, and vanilla until light and fluffy. Combine flour, cocoa, baking soda, and salt; add to the creamed mixture. Stir in peanut butter chips. Drop by teaspoonfuls onto ungreased cookie sheets. Bake at 350 degrees for 8 to 10 minutes. Cool 1 minute before removing from cookie sheet onto wire rack. Makes about 5 dozen (2 1/2 inch) cookies.