Congo Squares
["1 lb. brown sugar", "1 c. shortening", "3 eggs", "2 1/2 c. flour", "1 tsp. vanilla", "1 1/2 c. pecans (optional)", "1 lb. chocolate chips (optional)"]
["Mix all the ingredients and bake at 325\u00b0 for 30 to 40 minutes in an 11 x 13 x 2-inch pan (greased)."]
["brown sugar", "shortening", "eggs", "flour", "vanilla", "pecans", "chocolate chips"]