1 c. butter, softened to room temperature
1 c. brown sugar
1 egg yolk
2 tsp. vanilla
1 7/8 c. all purpose flour
6 (1.65 oz.) milk chocolate bars
1 c. chopped toasted almonds or pecans

In mixing bowl, cream together butter and brown sugar until fluffy. Add egg yolk and vanilla; gradually beat in flour until smooth (dough will be thick). Spread evenly onto ungreased 16 x 14 x 1 inch baking pan. Bake at 350 degrees for 15 minutes or until crust is golden brown and puffy. Remove from oven. Arrange chocolate bars evenly over crust. Let stand for 5 minutes to soften. Spread chocolate evenly over crust; sprinkle with chopped nuts. Cool. Cut into squares. Yields 40 squares.