Toffee Bars

Ingredients:
1 cup butter or margarine, softened
1 cup packed brown sugar
1 tsp vanilla
1 egg yolk
2 cups all-purpose flour
1/4 tsp salt
2/3 cup milk chocolate chips
1/2 cup chopped nuts, if desired

Directions:
1. Heat oven to 350; In a large bowl, mix butter, brown sugar, vanilla, and egg yolk. Stir in flour and salt. Press in ungreased 13x9x2 pan.

2. bake 25-30 minutes or until very light brown (crust will be soft). Immediately sprinkle choc. chips on hot crust. Let stand about 5 minutes, or until choc is soft; spread evenly, sprinkle with nuts. (I never use the nuts, but this time, I'm trying Heath toffee bits on top)

3. Cool bars 30 minutes in pan on wire rack.