Make-Ahead Breakfast Egg Casserole

Highlighted under: Simple & Tasty Meals

Make-Ahead Breakfast Egg Casserole is a delicious and convenient dish perfect for busy mornings.

Lena

Created by

Lena

Last updated on 2025-12-22T20:58:30.596Z

This Make-Ahead Breakfast Egg Casserole is perfect for those who want a hearty breakfast without the morning rush. Packed with eggs, cheese, and your favorite vegetables, it can be prepared the night before and baked in the morning for a warm and satisfying start to your day.

Why You'll Love This Recipe

  • Quick and easy to prepare, ideal for busy mornings
  • Versatile with endless filling options
  • Great for feeding a crowd or meal prepping

The Perfect Solution for Busy Mornings

Make-Ahead Breakfast Egg Casserole is your go-to solution for those hectic mornings when time is short. With minimal prep time, you can whip up a hearty meal that will fuel your day. Simply prepare the casserole the night before, and you’ll have a nutritious breakfast waiting for you when you wake up. This dish is not only satisfying but also customizable, allowing you to cater to your family's tastes and dietary preferences.

Imagine waking up to the enticing aroma of a freshly baked egg casserole. It’s the perfect start to your day, and it ensures that everyone in your household gets a nutritious meal without the stress of cooking from scratch in the morning. Just slice and serve, and you’re ready to tackle whatever the day throws your way.

Versatility at Its Best

One of the best features of this egg casserole is its versatility. You can change up the ingredients based on what you have on hand or what your family enjoys most. Swap out the vegetables for seasonal produce, or add in some cooked sausage or bacon for a heartier meal. The possibilities are endless, making it an excellent choice for any occasion, whether it's a family breakfast, brunch with friends, or a holiday gathering.

Additionally, the casserole can easily accommodate various dietary needs. For a lighter option, use egg whites or a dairy-free milk alternative. You can also make it gluten-free by ensuring all your ingredients are free from gluten. This flexibility allows everyone to enjoy a delicious breakfast without compromising their dietary choices.

Meal Prep Made Easy

In today’s fast-paced world, meal prepping is becoming increasingly popular, and this Make-Ahead Breakfast Egg Casserole fits perfectly into that lifestyle. By preparing it in advance, you can save time and ensure you have a healthy breakfast ready to go throughout the week. Simply portion out the casserole into individual servings, and you’ll have convenient meals that are easy to grab on busy mornings.

Whether you’re a busy professional, a parent juggling multiple schedules, or simply someone who wants to eat healthy, this casserole is a game-changer. It can be stored in the refrigerator for up to a week, or you can freeze portions for even longer storage. This way, you can enjoy a warm, homemade breakfast any day of the week, with minimal effort.

Ingredients

Ingredients

For the Casserole

  • 12 large eggs
  • 2 cups milk
  • 1 cup shredded cheese (cheddar or your choice)
  • 2 cups diced vegetables (bell peppers, onions, spinach)
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/2 teaspoon garlic powder
  • 1/2 teaspoon onion powder

Feel free to customize with your favorite ingredients!

Instructions

Instructions

Prepare the Casserole

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

Transfer to Baking Dish

Pour the egg mixture into a greased 9x13 inch baking dish. Cover with foil and refrigerate overnight or for at least 4 hours.

Bake the Casserole

Preheat your oven to 350°F (175°C). Remove the casserole from the refrigerator and let it sit at room temperature for 10 minutes. Bake covered for 30 minutes, then remove the foil and bake for an additional 15 minutes, or until the eggs are set and the top is lightly golden.

Serve

Allow the casserole to cool for a few minutes before slicing into squares and serving. Enjoy!

Store any leftovers in the refrigerator for up to 3 days.

Storing Leftovers

If you find yourself with leftovers after enjoying your Make-Ahead Breakfast Egg Casserole, don’t worry! Storing leftovers is simple and ensures you can enjoy this delicious dish again. Allow the casserole to cool completely before transferring it to an airtight container. It can be kept in the refrigerator for up to five days, making it a fantastic option for meal prep.

For longer storage, consider freezing portions of the casserole. Cut it into squares, wrap each piece in plastic wrap, and place them in a freezer-safe container. When you're ready to enjoy, simply thaw in the refrigerator overnight and reheat in the oven or microwave. This method retains the flavor and texture, allowing you to savor your breakfast casserole whenever you wish.

Serving Suggestions

To elevate your Make-Ahead Breakfast Egg Casserole, consider pairing it with fresh sides or toppings. A simple green salad or some sliced avocado can add a refreshing touch to your meal. For an extra burst of flavor, serve it with salsa, hot sauce, or a dollop of sour cream on the side. These additions can enhance the dish, making it even more enjoyable.

You can also complement your casserole with a warm beverage, such as freshly brewed coffee or herbal tea, to create a complete breakfast experience. This combination not only satisfies your hunger but also provides a comforting start to your day. Whether you're enjoying it solo or sharing with family and friends, these serving suggestions will enhance your breakfast gathering.

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Questions About Recipes

→ Can I make this casserole ahead of time?

Yes! You can prepare it the night before and bake it in the morning.

→ What vegetables work best in this recipe?

Bell peppers, onions, and spinach are great choices, but you can use any vegetables you like.

→ Can I freeze leftovers?

Yes, you can freeze the casserole. Just make sure to wrap it properly to prevent freezer burn.

→ How do I reheat leftovers?

Reheat in the microwave or oven until warmed through. If using the oven, cover with foil to prevent drying out.

Make-Ahead Breakfast Egg Casserole

Make-Ahead Breakfast Egg Casserole is a delicious and convenient dish perfect for busy mornings.

Prep Time15 minutes
Cooking Duration45 minutes
Overall Time60 minutes

Created by: Lena

Recipe Type: Simple & Tasty Meals

Skill Level: Easy

Final Quantity: 8 servings

What You'll Need

For the Casserole

  1. 12 large eggs
  2. 2 cups milk
  3. 1 cup shredded cheese (cheddar or your choice)
  4. 2 cups diced vegetables (bell peppers, onions, spinach)
  5. 1 teaspoon salt
  6. 1/2 teaspoon black pepper
  7. 1/2 teaspoon garlic powder
  8. 1/2 teaspoon onion powder

How-To Steps

Step 01

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

Step 02

Pour the egg mixture into a greased 9x13 inch baking dish. Cover with foil and refrigerate overnight or for at least 4 hours.

Step 03

Preheat your oven to 350°F (175°C). Remove the casserole from the refrigerator and let it sit at room temperature for 10 minutes. Bake covered for 30 minutes, then remove the foil and bake for an additional 15 minutes, or until the eggs are set and the top is lightly golden.

Step 04

Allow the casserole to cool for a few minutes before slicing into squares and serving. Enjoy!

Nutritional Breakdown (Per Serving)

  • Calories: 300 kcal
  • Total Fat: 20g
  • Saturated Fat: 10g
  • Cholesterol: 350mg
  • Sodium: 600mg
  • Total Carbohydrates: 12g
  • Dietary Fiber: 2g
  • Sugars: 4g
  • Protein: 20g