Yes! Cracking a raw egg into your potatoes before mashing is a thing. It's a great thing! The mashed potatoes turn out beautifully rich and creamy. It's important to start mashing and stirring as soon as you add the raw egg. Otherwise, the egg will cook in your hot potatoes and you will end up having scrambled eggs in there. So, once the potatoes are cooked and drained, first, add the salt and the cream cheese, and then the egg. As soon as the egg is added, start mashing and stirring with the potato masher until it's well combined. There is no need to worry that the egg is raw because you are technically cooking it twice: Once in the hot potatoes and then again in the oven. If you prefer not to add the egg to the potatoes, you can stir in one tablespoon of butter instead.