Toffee Bars - cooking recipe

Ingredients

1 c. brown sugar
1 c. butter
1 egg yolk
2 c. flour
1 tsp. vanilla
1 (12 oz.) pkg. chocolate chips

Preparation

Mix ingredients and spread on cookie sheet.
Bake at 350\u00b0 for 15 to 20 minutes.
Melt chocolate chips and spread on bars while still warm.