Butterscotch Squares(Servings:  4)  
["1 lb. margarine or butter", "2 lb. 8 oz. brown sugar", "10 eggs (1 lb.)", "1 Tbsp. vanilla", "1 lb. 8 oz. flour (all-purpose)", "2 Tbsp. baking powder", "1 tsp. salt", "12 oz. nuts, chopped (optional)"]
["Cream margarine and sugar on medium speed for 5 minutes.", "Add eggs, one at a time, and vanilla.", "Mix on low speed until blended. Combine dry ingredients.", "Add to creamed mixture.", "Mix on low speed until blended.", "Add nuts; mix to blend.", "Spread mixture evenly in 2 greased 12 x 18 x 2-inch baking pans.", "Bake at 325\u00b0 for 25 minutes.", "Cut 5 x 6-inch.", "Yield:", "60 portions."]
["margarine", "brown sugar", "eggs", "vanilla", "flour", "baking powder", "salt", "nuts"]