1 c. butter
1/2 c. brown sugar
1/2 c. granulated sugar
2 egg yolks
1 c. flour
1 tsp. vanilla
1 c. oats (quick cooking)

Cream butter and butter. Beat in beaten egg yolks. Add vanilla. Stir in flour and oats. Spread on a greased cookie sheet and bake 20 minutes (until golden brown) at 350 degrees.

TOPPING:

1 lg. (8 oz.) chocolate bar
1 tbsp. butter
3/4 c. walnuts, chopped

Melt butter and chocolate together and spread on warm cookies. Top with chopped nuts. Cool and cut into squares.