There’s no better side dish than these Instant Pot Mashed Potatoes! Instant Pot mashed potatoes are creamy, fluffy and are the perfect easy side dish. Cooking potatoes in the pressure cooker results in perfectly tender potatoes in just 8 minutes. There’s no water to boil — just pop the potatoes into the Instant Pot with just one cup of water and cook. They may be made in advance and kept warm in the Instant Pot, freeing up space on the stove top.