Nana Simpson'S Congo Bars
["2 3/4 c. sifted flour", "2 1/2 tsp. baking powder", "1/2 tsp. salt", "2 sticks margarine (butter)", "1 pkg. light brown sugar (1 lb.)", "3 eggs", "1 c. chopped nuts (optional; we don't put them in)", "1 pkg. chocolate chips"]
["Mix flour, baking powder and salt (dry ingredients).", "Melt oleo; add brown sugar.", "Stir until well blended.", "Let cool slightly (about 10 minutes).", "Add eggs, one at a time and beat well.", "Now add dry ingredients, then nuts and chips.", "Place in greased 11 x 17-inch pan.", "Bake at 350\u00b0 for 20 or 25 minutes or until done."]
["flour", "baking powder", "salt", "margarine", "light brown sugar", "eggs", "nuts", "chocolate chips"]