Toffee Bars

Directions

1. 1
   Cream butter and sugar, add slightly beaten egg yolk.
2. 2
   Add flour and vanilla and beat well.
3. 3
   Spread in greased pan (I use a jelly roll pan).
4. 4
   Bake at 250 degrees until batter is slightly brown and firm enough not to jiggle when pan is shaken (about 30 minutes).
5. 5
   Remove from oven and immediately lay the unwrapped Hershey bars on top. After 2 or 3 minutes, spread the melted candy over the bars to form an icing.
6. 6
   Let cool. I usually stick the pan in the fridge to speed this process up.