Make-Ahead Breakfast Egg Casserole

Name: Make-Ahead Breakfast Egg Casserole
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
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 vegetables (bell peppers, onions, spinach, etc.); 1 cup cooked and crumbled sausage or bacon (optional); 1 teaspoon garlic powder; 1 teaspoon onion powder

Highlighted under: Quick & Easy Recipes

Enjoy a delicious and hearty breakfast with this Make-Ahead Breakfast Egg Casserole, perfect for busy mornings.

Created by

Emma Johnson

Last updated on 2025-12-22T20:38:30.665Z

This Make-Ahead Breakfast Egg Casserole is a perfect solution for those busy mornings when you need a nutritious meal on the go. Packed with protein and vegetables, it can be prepared in advance and simply reheated for a quick breakfast option.

        Why You'll Love This Recipe
        Easy to prepare and can be made ahead of time
Packed with protein and veggies for a nutritious start to the day
Versatile recipe that can be customized with your favorite ingredients
Perfect for feeding a crowd or meal prepping for the week

      

The Perfect Breakfast Solution

Busy mornings can often lead to unhealthy breakfast choices or skipping the first meal of the day altogether. This Make-Ahead Breakfast Egg Casserole is the perfect solution for those hectic weekday mornings. With its hearty combination of eggs, cheese, and vegetables, it provides a balanced meal that keeps you full and energized throughout the day. Simply prepare it in advance and enjoy a delicious breakfast with minimal effort.

Whether you’re heading to work, school, or just starting your day at home, this casserole makes breakfast a breeze. You can slice and serve individual portions, making it easy to grab and go. Plus, it can be enjoyed warm or cold, offering flexibility for your morning routine.

Customizable and Adaptable

One of the best features of this breakfast casserole is its versatility. You can easily customize it to suit your taste preferences or dietary needs. Feel free to swap out the vegetables based on what you have on hand or what’s in season. Whether you prefer spinach, mushrooms, or zucchini, you can create a unique flavor profile each time you make it.

Additionally, if you need a vegetarian option, simply omit the meat and load up on extra vegetables or even some hearty grains like quinoa for added texture. The choice of cheese can also be varied—feta, mozzarella, or pepper jack can all add a delightful twist to the dish.

Perfect for Meal Prep

Meal prepping can save you time and stress during the week, and this Make-Ahead Breakfast Egg Casserole is an ideal dish for that purpose. After baking, cool the casserole completely before slicing it into squares. Store individual portions in airtight containers for quick breakfasts that can be reheated in the microwave in just a few minutes.

Not only does this casserole make meal prep easy, but it also minimizes food waste. By using leftover vegetables or meats, you can ensure that everything in your fridge is utilized. This makes it not only a delicious choice but also a smart one for your grocery budget.

Ingredients

Gather the following ingredients to make this delicious 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 vegetables (bell peppers, onions, spinach, etc.)
1 cup cooked and crumbled sausage or bacon (optional)
1 teaspoon garlic powder
1 teaspoon onion powder

Once you have all your ingredients ready, it's time to assemble the casserole!

Instructions

Follow these simple steps to prepare your Make-Ahead Breakfast Egg Casserole:

Preheat the Oven

Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking dish.

Mix the Eggs

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

Add the Ingredients

Stir in the shredded cheese, diced vegetables, and cooked sausage or bacon if using.

Pour into Baking Dish

Pour the egg mixture into the prepared baking dish and spread evenly.

Bake

Bake in the preheated oven for 45 minutes, or until the eggs are set and the top is lightly golden.

Cool and Serve

Remove from the oven and let cool for a few minutes before slicing into squares. Serve warm or store in the fridge for later.

Enjoy your delicious Make-Ahead Breakfast Egg Casserole!

Tips for Success

To ensure your egg casserole turns out perfectly every time, consider the freshness of your ingredients. Fresh eggs and high-quality cheese can significantly enhance the flavor and texture of the dish. Additionally, allowing the casserole to cool slightly after baking will help it set properly, making it easier to slice.

If you prefer a creamier texture, you can substitute half and half for the milk. This will give your casserole a richer flavor, making it even more indulgent. Experiment with different seasonings to find the perfect balance that suits your palate.

Serving Suggestions

This Make-Ahead Breakfast Egg Casserole is delicious on its own, but you can elevate your breakfast experience by serving it with fresh fruit or a light salad. A side of avocado or salsa can also add a refreshing touch, complementing the hearty flavors of the casserole.

For a more indulgent brunch, consider pairing it with pancakes or waffles. This combination will surely impress your guests and make any occasion feel special, whether it’s a holiday gathering or a casual weekend brunch.

Questions About Recipes

→ Can I make this casserole the night before?

Absolutely! You can prepare the casserole the night before, cover it, and refrigerate it. Just bake it in the morning.

→ How do I store leftovers?

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

→ Can I freeze this breakfast casserole?

Yes, you can freeze the casserole before baking. Just wrap it tightly and store it for up to 2 months. Thaw overnight in the fridge before baking.

→ What vegetables work best in this recipe?

You can use any vegetables you like! Bell peppers, onions, spinach, and mushrooms are all great options.