The best potatoes for Instant Pot Baked Potatoes are Russet or Idaho potatoes as they have higher starch content, making them perfect for baking. They will give you a light and fluffy inside and crispy outside. You can use red potatoes but they are not as starchy, so they will be softer on the inside. White potatoes can also be used for Instant Pot Baked Potatoes but they can become quite mushy when cooked.