2 c. flour
1 c. brown sugar
1/2 c. butter
1/2 c. shortening
1 egg
1 tsp. vanilla
1 c. chocolate chips

Cream sugar, butter, shortening, egg and vanilla. Add flour to creamed mixture. Mix well. Spread in ungreased 10 x 15 inch pan. Bake at 350 degrees for 15 minutes. Remove from oven, sprinkle with chocolate chips. Return to oven for 2 minutes. Spread over top. Cut while warm.