Toffee Bars
["2 sticks oleo", "1 c. brown sugar", "1 egg yolk", "1 1/2 c. flour", "1/2 tsp. soda", "1 tsp. vanilla"]
["Melt oleo.", "Add sugar and egg yolk, then add remaining ingredients.", "Spread on ungreased cookie sheet.", "Bake at 350\u00b0 for 10 to 12 minutes."]
["oleo", "brown sugar", "egg yolk", "flour", "soda", "vanilla"]