A large breakfast casserole is an ideal dish for feeding a crowd, whether you’re hosting a brunch, a family gathering, or a special event. This make-ahead recipe combines hearty eggs, savory sausage, cheese, and bread, baked into a fluffy, satisfying dish that can be prepared the night before and baked fresh in the morning. Its flexibility allows for easy substitutions and additions, making it a practical choice for serving a big group with minimal fuss.
Ingredients
- 2 pounds breakfast sausage (mild or spicy, as preferred)
- 2 large onions, chopped
- 3 bell peppers (red, green, or yellow), diced
- 2 loaves of day-old bread (French bread or Texas toast), cubed – about 24 cups
- 24 large eggs
- 4 cups whole milk
- 2 cups shredded cheese (cheddar, Monterey Jack, or a blend)
- 1 teaspoon salt
- 1 teaspoon black pepper
- 1 teaspoon garlic powder
- 1 teaspoon paprika (optional, for flavor)
- Fresh parsley, chopped (for garnish, optional)
Instructions
- Preheat your oven to 350°F (175°C). Grease a large (9×13 inch) or multiple 9×13-inch baking dishes or a large roasting pan that can hold all ingredients comfortably.
- In a large skillet over medium heat, cook the sausage until browned and cooked through, about 8-10 minutes. Break it apart with a spatula as it cooks. Remove from heat and drain excess fat.
- Add chopped onions and diced peppers to the skillet with the sausage and cook until the vegetables are tender, about 5 minutes. Remove from heat and let cool slightly.
- In a large mixing bowl, whisk together the eggs, milk, salt, pepper, garlic powder, and paprika until well combined.
- Layer the bread cubes evenly in the prepared baking dish(s). Spread the cooked sausage and vegetable mixture over the bread layer.
- Sprinkle the shredded cheese evenly over the sausage mixture.
- Pour the egg mixture evenly over the layered ingredients, ensuring all bread is soaked. Press down gently to help the bread absorb the liquid.
- Cover the dish with plastic wrap or foil and refrigerate for at least 4 hours or overnight. This allows the flavors to meld and the bread to soak up the custard.
- When ready to bake, remove the casserole from the refrigerator and let sit at room temperature for about 15 minutes. Bake uncovered for 45-50 minutes, or until the top is golden brown and a knife inserted into the center comes out clean.
- Remove from oven and let cool for 5 minutes. Garnish with chopped parsley if desired, then slice and serve hot.
Tips
- Substitutions: Swap sausage for cooked bacon, ham, or vegetarian options like sautéed mushrooms and spinach. Use different cheeses or bread types to customize the flavor.
- Storage: Refrigerate leftovers in an airtight container for up to 3 days. Reheat slices in the microwave or oven for best results.
- Prevent sogginess: Use slightly stale bread or toast the bread cubes before layering to help absorb the custard and avoid a soggy casserole.
- Even cooking: For large batches, consider baking in multiple smaller dishes rather than one big one to ensure even cooking and easier serving.
Serving Suggestions
Serve this hearty breakfast casserole with fresh fruit, such as sliced melons or berries, and a side of crispy bacon or breakfast sausages for a complete meal. Complement it with hot coffee, orange juice, or mimosas for a festive touch. It’s perfect for buffet-style serving, allowing guests to help themselves and enjoy a filling breakfast without fuss.
Variations
For a different flavor profile, try adding cooked breakfast potatoes or hash browns into the layers. You could also include sliced mushrooms, spinach, or cooked broccoli for added greens. For a spicier kick, incorporate chopped jalapeños or hot sauce into the egg mixture. Vegetarian versions can omit the sausage and increase the vegetable content for a lighter, plant-based option.
Storage and Reheating
Store leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, microwave individual slices for 1-2 minutes, or reheat the entire casserole covered with foil at 350°F (175°C) for about 20 minutes until warmed through. For best results, reheat in the oven to preserve the casserole’s texture and prevent sogginess.
Frequently Asked Questions
Can I prepare this casserole the night before?
Yes, assembling the casserole the night before and refrigerating it overnight allows the flavors to meld and makes for an easy morning. Just bake it in the morning as directed.
Can I freeze the casserole?
Absolutely. Once baked and cooled, wrap the casserole tightly in plastic wrap and foil. Freeze for up to 2 months. To reheat, thaw overnight in the fridge, then bake at 350°F (175°C) for 20-30 minutes until heated through.
What if I don’t have enough bread?
For a smaller crowd or if you want a thicker casserole, reduce the bread quantity accordingly. Using slightly stale bread helps it absorb more custard, but fresh bread works too—just be mindful of sogginess.
How do I know when it’s done baking?
The casserole is ready when the top is golden brown, and a toothpick or knife inserted into the center comes out clean. The edges should be firm, and the casserole should be puffed up slightly.
Can I make this gluten-free?
Yes, substitute the bread with gluten-free bread or use cooked, crumbled hash browns. Ensure the sausage and other ingredients are gluten-free if needed.
Is it suitable for breakfast or brunch?
This casserole is perfect for both breakfast and brunch, especially when serving a large group. It can be made ahead, which makes it ideal for leisurely gatherings.
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