Make-Ahead Breakfast Egg Casserole

Name: Make-Ahead Breakfast Egg Casserole
Prep time: 20 min
Cook time: 45 min
Total time: 1 h 5 min
Yield: 8 servings
Ingredients: 12 large eggs; 2 cups milk; 1 teaspoon salt; 1/2 teaspoon black pepper; 2 cups shredded cheese (cheddar or your choice); 1 cup diced cooked ham or cooked sausage; 1 cup diced bell peppers; 1 cup chopped spinach; 1/2 cup diced onions; 1 tablespoon olive oil

Highlighted under: Nutritious & Fresh Meals

Make-Ahead Breakfast Egg Casserole is a delicious and convenient dish that you can prepare the night before. Perfect for busy mornings, this casserole is packed with protein and flavor.

Created by

Olivia

Last updated on 2025-12-23T03:26:28.556Z

This Make-Ahead Breakfast Egg Casserole is not only easy to prepare but also versatile. You can customize it with your favorite vegetables, meats, and cheeses. It's a great way to start your day with a hearty breakfast that can be enjoyed any day of the week!

        Why You'll Love This Recipe
        Conveniently prepared in advance for busy mornings
Packed with nutritious ingredients that keep you full
Easily customizable to suit your taste preferences

      

The Perfect Solution for Busy Mornings

Mornings can be hectic, especially when you have a busy schedule. The Make-Ahead Breakfast Egg Casserole is designed to streamline your morning routine. By preparing this dish the night before, you can simply pop it in the oven while you go about your morning tasks. This way, you can enjoy a hearty breakfast without the hassle of cooking from scratch every day.

Not only does this casserole save you time, but it also provides a nutritious start to your day. Packed with protein from the eggs and ham or sausage, along with vitamins from the vegetables, it offers a well-rounded meal that will keep you energized until lunchtime.

Customizable to Your Taste

One of the greatest advantages of this breakfast casserole is its versatility. You can easily swap out ingredients based on your preferences or what you have on hand. If you're a fan of spicy food, consider adding jalapeños or a sprinkle of hot sauce to the egg mixture. Alternatively, for a vegetarian option, omit the meat and add more vegetables like mushrooms or zucchini.

You can also experiment with different types of cheese. While cheddar is a classic choice, feel free to mix in mozzarella, pepper jack, or even feta cheese for a unique flavor twist. This adaptability makes the casserole a favorite among families with varying tastes.

Storing and Reheating Leftovers

If you find that you have leftovers after preparing your casserole, don’t worry! This dish stores beautifully in the refrigerator for up to five days. Just ensure it is covered tightly or placed in an airtight container to maintain its freshness. When you’re ready to enjoy it again, simply reheat individual portions in the microwave or warm up the entire casserole in the oven.

For longer storage, you can freeze the casserole before or after baking. If freezing before baking, wrap it tightly in plastic wrap and aluminum foil. When you’re ready to bake from frozen, simply add an extra 15-20 minutes to the cooking time. This makes it a fantastic option for meal prep and ensures you always have a wholesome breakfast ready to go.

Ingredients

Gather the following ingredients to make your Make-Ahead Breakfast Egg Casserole:

Ingredients

12 large eggs
2 cups milk
1 teaspoon salt
1/2 teaspoon black pepper
2 cups shredded cheese (cheddar or your choice)
1 cup diced cooked ham or cooked sausage
1 cup diced bell peppers
1 cup chopped spinach
1/2 cup diced onions
1 tablespoon olive oil

Make sure to have all your ingredients ready before starting the preparation!

Instructions

Follow these steps to create your delicious Make-Ahead Breakfast Egg Casserole:

Preheat the Oven

Preheat your oven to 350°F (175°C).

Sauté the Vegetables

In a skillet, heat the olive oil over medium heat. Add the onions and bell peppers, and sauté until they are tender, about 5 minutes. Add the spinach and cook for another 2 minutes. Remove from heat.

Prepare the Egg Mixture

In a large bowl, whisk together the eggs, milk, salt, and black pepper until well combined.

Combine Ingredients

Add the sautéed vegetables, diced ham or sausage, and shredded cheese to the egg mixture. Stir until evenly mixed.

Pour into Baking Dish

Grease a 9x13 inch baking dish and pour in the egg mixture.

Bake the Casserole

Bake in the preheated oven for 45-50 minutes, or until the casserole is set and golden on top. Allow to cool for a few minutes before slicing.

Serve warm and enjoy your delicious breakfast casserole!

Nutritional Benefits

The Make-Ahead Breakfast Egg Casserole is not only delicious but also highly nutritious. Eggs are an excellent source of high-quality protein and essential vitamins. They are rich in vitamin D, B12, and selenium, contributing to overall health and well-being. Additionally, the inclusion of vegetables like spinach and bell peppers boosts the dish’s fiber content and adds valuable nutrients, making it an ideal choice for a balanced breakfast.

By incorporating ingredients like diced ham or sausage, you also gain additional protein, which is crucial for muscle development and repair. This casserole truly serves as a powerhouse of nutrition, helping you start your day on the right foot.

Serving Suggestions

To elevate your breakfast experience, consider serving the casserole with a side of fresh fruit or a light salad. This adds a refreshing contrast to the hearty casserole and offers additional vitamins and minerals. A dollop of salsa or a drizzle of hot sauce can also enhance the flavors, giving your dish an extra kick.

For those who enjoy a sweeter breakfast, serve the casserole alongside pancakes or waffles drizzled with maple syrup. This combination of savory and sweet can make for a delightful weekend brunch that the whole family will enjoy.

Questions About Recipes

→ Can I make this casserole the night before?

Yes! You can prepare the casserole the night before and store it in the refrigerator. Just bake it in the morning.

→ What can I substitute for the meat?

You can leave out the meat altogether or substitute it with cooked mushrooms or additional vegetables.

→ Can I freeze leftovers?

Yes! You can freeze the casserole for up to 3 months. Just reheat it in the oven when you're ready to enjoy it.

→ How do I store leftovers?

Store leftovers in an airtight container in the refrigerator for up to 4 days.