Sausage and spinach breakfast casserole is the ultimate make-ahead meal. Savory sausage. Fresh spinach. Melty cheese. Fluffy eggs. 10 minutes of prep. Perfect for holidays, brunch, or meal prep. Feed a crowd with zero stress.
Serves 8-10.
Step-by-Step Instructions
Preheat & Prep
Preheat oven to 375°F (190°C). Grease a 9×13 baking dish.
Mix Eggs
In a large bowl, whisk eggs, milk, salt, pepper, garlic powder, and nutmeg.
Assemble
Spread cooked sausage, spinach, mozzarella, and Parmesan evenly in the prepared dish. Pour egg mixture over the top.
Bake
Bake 35-40 minutes until eggs are set and top is golden brown. Let rest 5 minutes before slicing.
Serve
Garnish with green onions. Serve warm. Hearty, cheesy, make-ahead perfection.
Summary
Prep Time: 10 min | Bake Time: 40 min | Total: 50 min
Yield: 8-10 servings | Difficulty: Easy
Storage Notes
Fridge: 5 days. Freezer: 3 months. Reheat in oven at 350°F for 10-15 minutes or microwave for 1-2 minutes. Great for meal prep and holiday mornings — assemble the night before, bake fresh in the morning.
