How to Make Toffee Bars
- Preheat oven to 350
- Blend butter, sugar, egg yolk & vanilla in large bowl.
- Add flour to wet mixture and stir just until combined.
- Press dough onto greased & floured cookie sheet and bake for 10-15 minutes until lightly browned and toothpick comes out clean.
- While baking crust, melt hershey bars in double boiler pan.
- Spread chocolate onto warm crust and sprinkle with chopped nuts. Cut while warm.