1 c. butter
1 c. powdered sugar
2 c. flour
1 tsp. vanilla
1 egg yolk, beaten
8 Hershey candy bars
Ground nuts

Mix first 5 ingredients. Press into a 9 x 31 inch pan. Bake at 350 degrees for 20 minutes. Lay candy bars on top immediately so they will melt. Spread evenly. Sprinkle with nuts. Cut into 1 inch squares.