Iced lemon flavored cake with creamy filling cupcakes

Sugar, water, enriched flour (bleached wheat flour, malted barley flour, niacin, ferrous sulfate or reduced iron, thiamine mononitrate, riboflavin, folic acid), tallow, high fructose corn syrup, palm oil, corn syrup, contains 2% or less: modified cornstarch, egg, soybean oil, cornstarch, mono and diglycerides, whey, egg white, nonfat dry milk, hydrogenated tallow, salt, natural lemon oil, inulin, defatted soy flour, calcium carbonate, sodium acid pyrophosphate, baking soda, natural and artificial flavors, calcium sulfate, sorbic acid and potassium sorbate (to retain freshness), dextrose, polysorbate 60, glycerin, agar, cellulose gum, medium chain triglycerides, enzymes, titanium dioxide (color), monocalcium phosphate, guar gum, yellow 5 lake, soy lecithin, locust bean gum, fumaric acid, calcium caseinate, soy protein isolate, sodium caseinate, disodium phosphate, sunflower lecithin, yellow 6 lake.