Congo Bars
["2 3/4 c. flour", "2 1/2 tsp. baking powder", "1/2 tsp. salt", "2 sticks margarine", "1 tsp. vanilla", "1 lb. brown sugar", "3 eggs", "1 c. chopped nuts", "1 (6 oz.) pkg. chocolate chips"]
["Melt margarine in a large saucepan.", "Cool.", "Add eggs, 1 at a time.", "Beat well by hand.", "Cream in sugar.", "Add dry ingredients, then chips and nuts.", "Add vanilla.", "Mix thoroughly.", "Bake in a greased and floured 13 x 9 x 2-inch pan.", "Bake at 350\u00b0 for 25 to 30 minutes."]
["flour", "baking powder", "salt", "margarine", "vanilla", "brown sugar", "eggs", "nuts", "chocolate chips"]