Looking for a hearty, easy-to-make breakfast that feeds a crowd or lasts through busy mornings? This 9-egg breakfast casserole combines eggs, cheese, vegetables, and optional meats into a savory baked dish that’s perfect for weekend brunches or meal prep. It’s simple to prepare, customizable, and delivers a satisfying start to your day.
Ingredients
- 9 large eggs
- 1 cup whole milk (or half-and-half for creamier texture)
- 1 cup shredded cheese (cheddar, Monterey Jack, or a blend)
- 1 cup cooked breakfast sausage, crumbled (or cooked bacon, diced)
- 1 cup chopped vegetables (bell peppers, spinach, mushrooms, or tomatoes)
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1 teaspoon dried herbs (such as thyme or parsley, optional)
- 2 tablespoons olive oil or butter (for sautéing vegetables)
Instructions
- Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish with butter or non-stick spray.
- In a large mixing bowl, whisk together the eggs, milk, salt, pepper, and dried herbs until well combined.
- Prepare the vegetables: heat olive oil or butter in a skillet over medium heat. Sauté the chopped vegetables until tender, about 5-7 minutes. Let cool slightly.
- Spread the cooked sausage and sautéed vegetables evenly in the prepared baking dish.
- Pour the egg mixture over the sausage and vegetables, ensuring even distribution.
- Sprinkle the shredded cheese evenly over the top of the casserole.
- Place the dish in the preheated oven and bake for 35-40 minutes, or until the eggs are set and the top is golden brown.
- Remove from the oven and let rest for 5 minutes before slicing and serving.
Tips
- Substitutions: Use plant-based milk and vegan cheese for a dairy-free version, or swap the sausage for cooked tofu or ham.
- Storage: Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the microwave for 1-2 minutes until warm.
- Common mistakes: Avoid overbaking, which can lead to dry eggs. Keep an eye on the casserole after 35 minutes to prevent overcooking.
- Additional ingredients: Feel free to add cooked hash browns, diced onions, or fresh herbs for extra flavor.
Serving Suggestions
This casserole pairs well with fresh fruit, a side of toast, or a simple mixed greens salad. It’s perfect for breakfast, brunch, or even a quick dinner. Cut into squares and serve with salsa or hot sauce for an added kick.
Variations
Customize this casserole to suit your tastes and dietary needs. Try adding different cheeses such as feta or pepper jack. Incorporate cooked potatoes or sweet potatoes for extra heartiness. For a vegetarian version, omit the meat and add more vegetables or beans. You can also make a low-carb version by replacing the bread or potatoes with cauliflower rice or zucchini noodles.
Storage and Reheating
Let the casserole cool completely before storing. In the refrigerator, it will stay fresh for up to 3 days. To reheat, cut into individual portions and microwave on high for 1-2 minutes, or until heated through. For a crispier top, reheat in an oven at 350°F (175°C) for about 10 minutes. If freezing, cut into portions, wrap tightly, and store for up to 2 months. Reheat directly from frozen in the microwave or oven.
Frequently Asked Questions
Can I prepare this casserole the night before?
Yes, you can assemble the casserole the night before, cover it tightly with plastic wrap, and refrigerate. In the morning, bake it straight from the fridge, adding an extra 10 minutes to the baking time to ensure it’s fully cooked.
Is this recipe suitable for a low-carb diet?
While the basic recipe contains eggs, cheese, and vegetables, adding bread or potatoes increases carbs. To make it lower in carbs, omit bread or potatoes and focus on high-protein, low-carb vegetables like spinach, zucchini, and mushrooms.
Can I make this casserole gluten-free?
Absolutely. This recipe is naturally gluten-free as long as you use gluten-free sausage and check that your cheese and other ingredients do not contain gluten. Ensure any added fillers or processed ingredients are labeled gluten-free.
What are some good vegetarian options for this casserole?
Replace the sausage with sautéed mushrooms, tofu scramble, or beans. Increase the amount of vegetables and add extra cheese or herbs for flavor. This makes a hearty vegetarian breakfast that’s still satisfying.
How do I know when the casserole is done?
The casserole is ready when the eggs are set and no longer runny. The top should be golden brown. You can insert a toothpick in the center; if it comes out clean, it’s cooked through. An internal temperature of 160°F (71°C) also indicates doneness.
Can I customize the cheese and vegetables?
Definitely. Feel free to use your favorite cheeses or mix different types. For vegetables, options like kale, zucchini, or broccoli work well. Customize based on your preferences or what you have on hand for a versatile, delicious breakfast.
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