1 lb. confectioners' sugar, sifted
1/4 tsp. cream of tartar
1/2 c. milk
1 tsp. vanilla
1 (12 oz.) jar peanut butter
1 (7 oz.) jar marshmallow

Combine sugar, cream of tartar and milk in pot, bring to a boil and cook 5 minutes. Remove from heat. Add vanilla, peanut butter and marshmallow. Stir quickly and pour into buttered pan. (Be careful not scorch the contents when bringing to a boil.)