This easy make-ahead breakfast casserole uses frozen shredded hash browns instead of bread, creating a hearty, crispy, and cheesy dish perfect for holidays, lazy weekends, or feeding a crowd with minimal morning stress.
Do not skip drying the hash browns; excess moisture leads to a soggy casserole. The overnight rest is key for best texture. Let the casserole rest after baking for cleaner slices. For dairy-free, use unsweetened oat or almond milk and dairy-free cheese. For vegetarian, omit sausage and add sautéed mushrooms, bell peppers, and onions.
Keywords: breakfast casserole, hash brown casserole, sausage casserole, make-ahead breakfast, holiday brunch, easy breakfast recipe, gluten-free breakfast