Congo Bars
["1 large pkg. chocolate chips", "1 lb. box light brown sugar", "1 1/3 sticks margarine", "3 eggs", "2 3/4 c. plain flour", "2 1/2 tsp. baking powder", "1/2 tsp. salt", "1 tsp. vanilla", "1 c. pecans"]
["Bake in 11 x 13-inch pan.", "Melt margarine and pour on brown sugar.", "Beat until smooth.", "Add eggs, baking powder, salt, flour and vanilla; beat until smooth.", "Add pecans and chocolate chips; mix. Bake at 350\u00b0 for 20 minutes."]
["chocolate chips", "light brown sugar", "margarine", "eggs", "flour", "baking powder", "salt", "vanilla", "pecans"]