Yellow cake lemon filling with white buttercreme icing

cake-sugar, enriched bleached flour (bleached wheat flour, niacin, reduced iron, thiamine mononitrate, riboflavin, folic acid), water, soybean oil, eggs, egg whites, modified corn starch. contains 2% or less of: nonfat milk, salt, leavening (sodium acid pyrophosphate, sodium bicarbonate, corn starch, monocalcium phosphate), vital wheat gluten, emulsifiers (sorbitan monostearate, mono - and diglycerides, polysorbate 60, sodium stearoyl lactylate, soy lecithin), artificial and natural flavors, b-carotene (for color), dextrose, maltodextrin, gum acacia, partially hydrogenated soybean oil. icing-sugar, shortening (interesterified soybean oil, soybean oil, palm oil, canola oil, hydrogenated cottonseed oil, mono - and diglycerides, polysorbate 60, tbhq [preservative]), corn syrup, water. contains 2% or less of: salt, citric acid, corn starch, modified corn starch, high fructose corn syrup, dextrose, maltodextrin, guar gum, locust bean gum, alpha tocopherol, natural and artificial flavor, titanium dioxide (for color), blue 1, blue 2, yellow 5 lake, blue 1 lake, yellow 5, yellow 6, red 40, red 40 lake, red 3, blue 2 lake, yellow 6 lake, phosphoric acid, potassium sorbate and sodium benzoate (preservatives). lemon filling-water, high fructose corn syrup, corn syrup, sugar, corn starch modified, palm oil, citric acid, sodium citrate, lemon pulp, lemon juice concentrate, sodium benzoate and potassium sorbate (preservatives), salt, gellan gum, lemon, mono - and diglycerides, propylene glycol, titanium dioxide (for color), polysorbate 60, yellow 5, yellow 6.