toffee squares

Ingredients For toffee squares

• 1 c

  butter or margarine
• 1 c

  brown sugar, firmly packed
• 1

  egg yolk
• 1 tsp

  vanilla extract
• 2 c

  all purpose flour
• 1/4 tsp

  salt
• 4

  milk chocolate bars (7/8 oz each)
• 1/2 c

  chopped nuts