1 c  Butter
1/2 c  Brown sugar
1/2 c  Sugar
1    Egg yolk
1 ts Vanilla
2 c  Flour
10 oz Chocolate chips
1 c  Finely chopped nuts

Cream butter and sugar, add egg yolk and vanilla. Stir in flour.
Spread mixture thinly on greased cookie sheet. Bake at 350 degrees for 15
to 20 minutes. Melt chocolate over hot water and spread over warm baked
cookies. Sprinkle on nuts and press them firmly. Cut in bars while still
warm. Let stand until chocolate is dry.