Mug cakes confetti cake mix with vanilla frosting

frosting: sugar, invert sugar, canola oil, palm oil, water, corn syrup, less than 2% of: mono and diglycerides, polysorbate 60, corn starch, food starch-modified, salt, potassium sorbate (preservative), natural flavor, citric acid, cake mix: sugar, wheat flour, palm oil, wheat starch, leavening (baking soda, monocalcium phosphate, sodium aluminum phosphate), dextrose, eggs, salt, natural flavor, canola oil, cellulose gum, color added (vegetable juice, turmeric, paprika, fruit juice), modified cornstarch,