This overnight crockpot breakfast casserole wakes you up to a hearty and nutritious breakfast, cooked to perfection in the slow cooker while you slept. Hash brown potatoes, eggs, and ham team up in this breakfast casserole along with melty shredded cheese and seasonings. Serve this tasty crockpot egg casserole with buttered toast, sliced tomatoes, fresh fruit, and crispy bacon. With the festive look of the multicolored peppers, the dish is a great choice for holiday mornings, or for a brunch it's as easy to serve right from the pot as it is to transport it in the pot if you're bringing it somewhere else. The recipe calls for refrigerated hash brown potatoes, but partially thawed hash browns are good, too, and they might even help extend the cooking time slightly. See the tips and variations below for how to thaw frozen hash browns and some additional ingredient ideas.