Easy Make-Ahead Breakfast Casserole
This easy make-ahead breakfast casserole is a hearty, flavorful, and endlessly adaptable dish perfect for breakfast, brunch, or dinner. Made with sausage, vegetables, crusty bread, and cheese, it’s prepped in advance and baked fresh, making it an ideal meal for holidays or feeding a crowd.
Ingredients
4 cups (175g) cubes of crusty bread
1 teaspoon olive oil
1 pound ground pork sausage, casings removed
1 teaspoon dried rosemary or Italian seasoning (optional)
3/4 cup (100g) chopped yellow onion
2 garlic cloves, minced
2 cups (275g) chopped bell peppers
1 cup (100g) sliced mushrooms
1 cup chopped fresh spinach
12 large eggs
1/4 teaspoon salt
1/8 teaspoon freshly ground black pepper
2/3 cup (160ml) milk or half-and-half
1 cup (100g) shredded cheddar cheese
Optional garnish: green onion and/or chopped parsley
Instructions
- Grease a 9×13-inch or 3–4-quart oven-safe dish. Layer bread cubes evenly in the bottom.
- Heat olive oil in a large skillet over medium heat. Cook sausage with optional seasoning, breaking it apart. Add onion, garlic, peppers, mushrooms, and spinach. Cook until softened, about 5–6 minutes.
- Spread cooked sausage and vegetables over bread layer in baking dish.
- Whisk together eggs, salt, pepper, milk, and cheese. Pour evenly over the meat and vegetable mixture.
- Cover with plastic wrap or foil and refrigerate for at least 30 minutes or up to 24 hours.
- Preheat oven to 375°F (191°C). Bake uncovered for 40–45 minutes until golden and cooked through.
- Let rest 10 minutes before slicing. Garnish with green onion or parsley if desired.
Notes
- Use frozen hash browns (3 cups) instead of bread for a gluten-free option.
- Make ahead by assembling up to 24 hours before baking.
- Freezer-friendly: freeze before or after baking for up to 3 months.
- Swap sausage for bacon, ham, turkey, or keep vegetarian by adding more vegetables.
- For richer texture, use whole milk or half-and-half. Lower-fat and non-dairy milk also work.
- Try other cheeses like pepper jack, feta, gouda, or Swiss.
Find it online: https://yumntasty.com/easy-make-ahead-breakfast-casserole/
