Is CINNAMON ROLL MAPLE ICING vegan?

roll: flour blend [enriched wheat flour (flour, malted barley flour, niacin, reduced iron, thiamine mononitrate, riboflavin, folic acid), dextrose, soybean oil, salt, leavening (sodium acid pyrophosphate, baking soda), soy flour, dry whey, mono & diglycerides with bht and citric acid, sodium stearoyl lactylate, nonfat milk solids, nonfat dry milk, wheat starch, corn starch, beta carotene (color), enzymes, citric acid, silicon dioxide, alpha tocopherols (preservative)], water, contains 2% or less of the following: cinnamon, brown sugar (sugar, molasses), potato flakes (potatoes, monoglycerides, sodium acid pyrophosphate, sodium metabisulfite, citric acid), yeast, partially hydrogenated soybean oil, salt, soy lecithin, artificial and natural butter flavor, vitamin a palmitate, artificial color, hydrolyzed soy protein, yeast extract, pudding (sugar, dextrose, modified corn starch, tetrasodium pyrophosphate, disodium phosphate, monoglycerides, artificial flavor, salt, soy lecithin, nonfat milk, maltodextrin, partially hydrogenated soybean oil, yellow 5, yellow 6) icing: powdered sugar (sugar, corn starch), brown sugar (sugar, molasses), margarine [partially hydrogenated soybean and palm oils, water, contains 2% or less salt, mono and diglycerides, nonfat dry milk, soy lecithin, sodium benzoate, artificial flavor, beta-carotene (color), vitamin a palmitate], milk artificial vanilla flavor (caramel color, sulfites), salt, natural and artificial maple flavor (caramel color, maple syrup, sulfites)

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