Cub white iced/colored buttercream 1/8 sheet marble cake, White iced/colored buttercream

Ingredients

Cake(sugar,Bleached enriched flour(wheat flour,Malted barley flour,Niacin,Reduced iron, Thiamine mononitrate,Riboflavin,Folic acid),Cocoa(processed with alkali), Vegetable shortening(soybean oil,Vegetable mono- and diglycerides, Propylene glycol esters, Tocopherols,Vitamin c palmitate), Dried egg whites,Leavening(sodium bicarbonate, Sodium aluminum phosphate, Sodium acid pyrophosphate,Monocalcium phosphate).Contains 2% or less of each of the following:dried egg yolks,Food starch-modified,Nonfat dry milk,Whey protein concentrate(milk), Emulsifier(propylene glycol esters,Mono-and diglycerides,Sodium stearoyl lactylate),Natural and artificial flavor,Soybean oil,Salt,Cellulose gum,Polysorbate 60,Guar gum,Sodium stearoyl lactylate,Xanthan gum,Red 40,Soy flour)soybean oil, Frosting ((sugar,Vegetable shortening(palm oil,Canola oil,Mono- and diglycerides), Water,Corn syrup.Contains 2% or less of each of the following:high fructose corn syrup,Corn starch,Blue 1,Natural and artificial flavor,Salt,Guar gum,Phosphoric acid,Potassium sorbate (preservative), Polysorbate 60,Sodium benzoate(preservative))., Water, Glycerine,Sugar,Fd&c yellow #6,Fd&c red #40,Modified corn starch,Fd&c blue #1,Carrageenan,Potassium sorbate (preservative), Xanthan gum,Citric acid,Maltodextrin,Dextrose.)