1 c. butter
1 c. brown sugar
1 egg yolk
2/3 c. crushed walnuts
1 1/2 c. sifted flour
6 (1.5 oz.) milk chocolate bars

Preheat oven to 350 degrees. Cream butter, brown sugar and egg yolk. Add flour gradually, stirring until well blended. Spread dough in very lightly greased cookie sheet. Bake 15-20 minutes or until medium brown. After removing from oven, lay chocolate bars on top. Spread with a knife when melted. Sprinkle with nuts. When cool, cut into bars or diamonds.