How to Store and Reheat Frozen Mashed Potatoes. If you’re not going to freeze your leftovers, store them in an airtight container in the fridge for 3-5 days. Here are four ways to reheat frozen ...

After cooking the mashed potatoes, Wofford suggests storing them in a heatproof bowl. When it's time to warm up the potatoes, place the bowl over a pot of simmering water.

Find out how to reheat make-ahead or leftover mashed potatoes the right way. ... Make sure you stir them occasionally and keep the heat on low so they don't stick to the pot or worse, scorch.

How to Reheat Mashed Potatoes in the Oven. Mashed potatoes can be reheated in the oven, too! Over at Queen Martha Stewart’s website, this is what she suggests.