COOKIE:

2/3 c. butter
1 c. sugar
1 egg
1 1/2 tsp. vanilla
1 1/2 c. unsifted all purpose flour
1/2 c. Hershey's cocoa
1/2 tsp. baking powder
1/4 tsp. salt
1/3 c. milk
8 oz. pkg. Reese's Pieces candy
Chocolate frosting (below)

FROSTING:

1 c. confectioner's sugar
3 tbsp. Hershey's cocoa
3 tbsp. butter
2 tbsp. milk
1/2 tsp. vanilla

Cookie: Cream butter and sugar in large mixer bowl until light and fluffy; blend in egg and vanilla. Combine flour, cocoa, baking powder and salt, add alternately with milk to creamed mixture. Stir in 1/2 cup Reese's Pieces candy. Drop by heaping teaspoonfuls 2 inches apart on greased cookie sheet. Bake at 350 degrees for 7 to 9 minutes until set, but not dry. Cool slightly, remove to rack. Frost cooled cookies with chocolate frosting, decorate with remaining 1/2 c. Reese's Pieces. About 3 dozen cookies. Frosting: Combine sugar and cocoa, set aside. Cream butter in small mixing bowl, add cocoa mixture alternately with milk, beating to spreading consistency. Blend in vanilla.