White Cake with 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), DEXTROSE, ARTIFICIAL AND NATURAL FLAVORS. ICING: SUGAR, VEGETABLE SHORTENING (INTERESTERIFIED SOYBEAN OIL, SOYBEAN OIL, HYDROGENATED COTTONSEED OIL, MONO- AND DIGLYCERIDES, POLYSORBATE 60, PALM OIL, CANOLA OIL), SOYBEAN OIL, CORN SYRUP, WATER. CONTAINS 2% OR LESS OF SALT, CITRIC ACID, CORN STARCH, MODIFIED CORN STARCH, ALPHA TOCOPHEROL, NATURAL AND ARTIFICIAL FLAVOR, DEXTROSE, TITANIUM DIOXIDE (FOR COLOR), HIGH FRUCTOSE CORN SYRUP, GLYCERINE, YELLOW 5, YELLOW 6, CARRAGEENAN, XANTHAN GUM, RED 40, RED 40 LAKE, RED 3, BLUE 1, BLUE 1 LAKE, YELLOW 5 LAKE, YELLOW 6 LAKE, GUAR GUM, PHOSPHORIC ACID, MALTODEXTRIN, LOCUST BEAN GUM, SODIUM BENZOATE AND POTASSIUM SORBATE (PRESERVATIVES).,QUINS: SUGAR, CORNSTARCH, VEGETABLE OIL (PALM, PALM KERNEL). CONTAINS 2% OR LESS OF RICE FLOUR, PALM OIL, CONFECTIONER'S GLAZE, DEXTRIN, GUM ACACIA, XANTHAN GUM, ARTIFICIAL COLOR, TITANIUM DIOXIDE (COLOR), YELLOW 5 LAKE, NATURAL AND ARTIFICIAL FLAVOR, BLUE 1 LAKE, SOY LECITHIN, CARNAUBA WAX, YELLOW 5, RED 3, BLUE 1, YELLOW 6, POTASSIUM SORBATE (PRESERVATIVE), MONOAND DIGLYCERIDES, POLYSORBATE 60.