1 c. butter
1 c. brown sugar, packed
1 egg yolk
1 tsp. vanilla
2 c. flour
1/4 tsp. salt
1 (6 oz.) pkg. semi sweet chocolate bits
1/2 c. chopped nuts

Cream butter, sugar, egg yolk and vanilla. Stir in flour and salt until blended. Put into a 15"x10" cookie sheet and bake for 20 minutes. Remove from oven and immediately sprinkle chocolate bits on top and when melted, spread. Sprinkle nuts on top.