Ooey gooey butter dessert bars

Cake base (sugar, enriched flour bleached [wheat flour, niacin, reduced iron, thiamine mononitrate, riboflavin, folic acid], nonfat milk, propylene glycol mono and diesters of fatty acids, mono and diglycerides, modified food starch, leavening [sodium aluminum phosphate, baking soda, monocalcium phosphate, sodium acid pyrophosphate], palm oil, egg whites, dextrose, salt, soy lecithin, polysorbate 60, soybean oil, xanthan gum, sodium stearoyl lactylate, water, guar gum, cellulose gum, natural flavor, acacia gum, citric acid), powdered sugar (sugar, corn starch), cultured butter with natural flavor (pasteurized cream, natural flavors), cream cheese (pasteurized milk and cream, salt, carob bean gum, cheese culture), egg, natural flavor, pan releaser (soybean oil, mineral oil, soy lecithin, dimethyl polysiloxane).