This rich and savory casserole is the ultimate set-it-and-forget-it comfort food. Creamy, cheesy, and deeply satisfying, it transforms simple ingredients into a meal that feels like a warm hug on a busy weeknight.
For a vegetarian version, use cream of mushroom soup. Always use frozen hash browns to prevent a soupy texture. Avoid cooking on HIGH heat to keep the dairy from separating. Optional mix-ins: 1 lb cooked, crumbled breakfast sausage or taco meat.