This really is The Best Instant Pot Meatloaf and Garlic Parmesan Potatoes. It's an all-in-one meal cooked right in your electric pressure cooker!
Updated to add: I tested this recipe using the Instant Pot brand pressure cooker. Some folks have suggested that the brands of pressure cookers they own are different from the Instant Pot and require more cooking time. So having said that, please use your judgement based on your knowledge of the electric pressure cooker that you own. You may need to add additional time to your cooking.