Frost the cupcakes2 using a piping bag or a large zip top bag with the corner snipped off. Cupcakes will stay fresh covered at room temperature up to 3 days. Store in the refrigerator up to 5 days. Cupcakes freeze well, frosted or unfrosted, up to 3 months. Thaw in the refrigerator.
Carrots: I like to use a food processor to shred the carrots, then replace the shredder with the blade and pulse a few times to turn some of the shreds into finely processed carrots. This brings the best moisture and texture to the cupcakes.