Chocolate chip blondie bars

Base (wheat flour, brown sugar, sugar, natural and artificial flavor, leavening [sodium acidpyrophosphate, sodium bicarbonate, corn starch, monocalcium phosphate], salt), semi-sweet chocolate chips (chocolate liquor, sugar, soya lecithin [emulsifier], vanillin [artificial flavoring]), butter (cream, salt), margarine (partially hydrogenated soybean and cottonseedoils, water, salt vegetable mono and diglycerides, nonfatdry milk solids, soy lecithin, artificial flavor, betacarotene [color] vitamin a palmitate added), whole eggs.