Instant Pot Mashed Potatoes (no drain) are the perfect way to make this family favorite side dish. It’s a quick and easy side dish to make and a great way to keep your oven available. There are so many different ways to make mashed potatoes. These are by far the easiest mashed potatoes I’ve ever made because there is no need to drain them since it’s an Instant Pot recipe. The result of this mashed potato recipe is a creamy, delicious side that will have everyone at Thanksgiving coming back for more.