1 c. butter
1 c. brown sugar
1 egg yolk
2 c. flour
1/4 tsp. salt
4 tsp. vanilla
1/2 lb. chocolate chips
1/2 c. nuts, chopped

Cream butter, add sugar and egg yolks. Add flour, salt and vanilla. Spread in pan (lined with foil and greased). Melt chocolate over water. Spread on batter, sprinkle with chopped nuts. Bake 20 minutes at 350 degrees.