Make Ahead Breakfast Casserole For A Crowd

Highlighted under: Instant Quick Meals Collection

As someone who loves hosting brunch, I've perfected a make-ahead breakfast casserole that never fails to impress. I enjoy preparing this dish the night before; it's a true lifesaver on busy mornings. The combination of eggs, sausage, and cheese creates a rich and satisfying meal that everyone loves. Plus, it's incredibly versatile, allowing me to tailor it with different veggies and spices based on my guests' preferences. This recipe ensures that I can enjoy time with my friends without being stuck in the kitchen.

Elspeth Murray

Created by

Elspeth Murray

Last updated on 2026-02-06T17:29:35.737Z

When I first made this breakfast casserole for a gathering, it was a complete hit! I remember my friends complementing the blend of flavors and the satisfying texture. I had tried various versions before but perfecting this particular combination of sausage, eggs, and cream was the game changer. It just works!

To enhance the dish, I recommend using day-old bread for a hearty base. This helps absorb the egg mixture beautifully, resulting in a lovely custard-like consistency. It's the little tips that really elevate this recipe to crowd-pleaser status!

Why You Will Love This Recipe

  • Convenient to prepare ahead of time, saving you hustle on the day of the gathering
  • Rich flavors from combining savory sausage and creamy cheese
  • Easily adaptable with different vegetables and spices

Perfecting Your Casserole

Achieving the ideal texture in a breakfast casserole is all about the balance of ingredients. The eggs and milk provide the custardy base needed to bind everything together, while the day-old bread soaks up the mixture, creating delightful layers. Using fresh bread might alter the liquid absorption and lead to a soggy casserole, so always opt for bread that’s slightly stale. You’ll know you’ve got it right when your casserole is fluffy yet holds its shape after baking.

Timing is also crucial when baking. Make sure to let the casserole rest at room temperature for 10 minutes before placing it in the oven. This not only helps to achieve even cooking but allows the flavors to meld together beautifully. Keep an eye on it toward the end of the baking time; when it's golden on top and a knife inserted in the center comes out clean, you know it’s ready to serve.

Storage and Reheating

One of the best aspects of this breakfast casserole is its make-ahead potential. Store any leftovers in an airtight container in the refrigerator for up to three days. Reheat slices in the microwave or pop them back in the oven at 350°F (175°C) for about 15-20 minutes until warmed through. The oven method will help restore some crispiness to the top, making it feel fresh as if it were just baked.

If you’re planning ahead for a larger crowd or want to freeze portions, slice the casserole and wrap the pieces tightly in plastic wrap followed by aluminum foil. Thaw in the fridge overnight before reheating. Freezing will preserve the flavors, but avoid keeping it frozen for longer than three months to best enjoy its rich sausage and egg blend.

Flavor Variations

This breakfast casserole is incredibly adaptable! Feel free to swap out the sausage for diced ham, bacon, or even a plant-based alternative for a lighter version. You can also introduce a variety of vegetables such as spinach, mushrooms, or zucchini to cater to personal taste preferences or seasonal availability. Just remember to sauté the vegetables first to eliminate excess moisture, which can affect the casserole’s consistency.

For added depth of flavor, consider incorporating fresh herbs like chives or parsley into the egg mixture or sprinkle some hot sauce on top before baking for a kick. You can also experiment with different types of cheese; feta or pepper jack can bring unique flavors that enhance your breakfast casserole experience.

Ingredients

Gather these ingredients to get started on your breakfast casserole:

Ingredients

  • 1 pound breakfast sausage, cooked and crumbled
  • 8 large eggs
  • 2 cups milk
  • 8 slices day-old bread, cubed
  • 2 cups shredded cheese (cheddar or your choice)
  • 1 bell pepper, diced
  • 1 onion, diced
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/2 teaspoon garlic powder

Make sure to have everything prepared before you start mixing!

Instructions

Follow these steps to create your perfect breakfast casserole:

Prepare the Baking Dish

Preheat your oven to 350°F (175°C). Grease a large baking dish with cooking spray or butter.

Cook the Sausage

In a skillet over medium heat, cook the breakfast sausage until browned. Drain excess grease and set aside.

Mix the Ingredients

In a large bowl, whisk together the eggs, milk, salt, pepper, and garlic powder. Stir in the cooked sausage, cubed bread, cheese, bell pepper, and onion until well combined.

Assemble and Refrigerate

Pour the mixture into the prepared baking dish. Cover tightly with plastic wrap and refrigerate for at least 1 hour, or overnight.

Bake

Remove the casserole from the fridge and let it sit at room temperature for about 10 minutes. Bake in the preheated oven for 45 minutes, or until set and golden on top.

Serve

Let the casserole cool for a few minutes before slicing and serving. Enjoy with your favorite breakfast sides!

Delicious and ready to enjoy!

Pro Tips

  • Feel free to customize the casserole with your favorite vegetables or seasonings to make it your own.

Ingredient Importance

The choice of cheese in your casserole plays a pivotal role in defining its overall flavor profile. Opting for a sharp cheddar provides a robust and tangy contrast to the richness of the eggs and sausage. Alternatively, using creamy cheeses like Monterey Jack or Havarti will lend a smoother backdrop that melts beautifully. This not only enhances the texture but also allows the added toppings, like herbs and spices, to shine through.

Each ingredient in this casserole serves its purpose. The eggs and milk create that custardy base, while the bread acts as a sponge, absorbing all the flavors during the soaking process. If you’re looking for a lighter up, consider using egg whites and low-fat milk without sacrificing much of the deliciousness, though be prepared for a slightly different texture.

Serving Suggestions

When it comes to serving this breakfast casserole, pairing it with fresh sides can elevate the meal. A simple green salad dressed with lemon vinaigrette adds brightness that contrasts beautifully with the richness of the casserole. Additionally, serving it with a selection of salsas or hot sauces allows guests to customize their plates and enhances the eating experience.

For a more festive brunch spread, consider offering this casserole alongside fresh fruit, yogurt parfaits, or even mimosas for a touch of elegance. The combination of sweet and savory makes every bite satisfying. To keep things cohesive, choose sides that echo the casserole's flavors, such as roasted asparagus or a light potato dish.

Questions About Recipes

→ Can I make this casserole the night before?

Yes, in fact, it's best to prepare it the night before and let it sit in the fridge overnight!

→ Can I freeze this breakfast casserole?

Absolutely! Just make sure to cool it completely before wrapping it tightly for freezing.

→ What can I substitute for the sausage?

You can use turkey sausage, bacon, or even a vegetarian option like mushrooms or spinach.

→ How do I reheat leftover casserole?

Simply reheat individual portions in the microwave or cover the whole casserole with foil and warm it in the oven.

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Make Ahead Breakfast Casserole For A Crowd

As someone who loves hosting brunch, I've perfected a make-ahead breakfast casserole that never fails to impress. I enjoy preparing this dish the night before; it's a true lifesaver on busy mornings. The combination of eggs, sausage, and cheese creates a rich and satisfying meal that everyone loves. Plus, it's incredibly versatile, allowing me to tailor it with different veggies and spices based on my guests' preferences. This recipe ensures that I can enjoy time with my friends without being stuck in the kitchen.

Prep Time20 minutes
Cooking Duration45 minutes
Overall Time65 minutes

Created by: Elspeth Murray

Recipe Type: Instant Quick Meals Collection

Skill Level: Intermediate

Final Quantity: 8 servings

What You'll Need

Ingredients

  1. 1 pound breakfast sausage, cooked and crumbled
  2. 8 large eggs
  3. 2 cups milk
  4. 8 slices day-old bread, cubed
  5. 2 cups shredded cheese (cheddar or your choice)
  6. 1 bell pepper, diced
  7. 1 onion, diced
  8. 1 teaspoon salt
  9. 1/2 teaspoon black pepper
  10. 1/2 teaspoon garlic powder

How-To Steps

Step 01

Preheat your oven to 350°F (175°C). Grease a large baking dish with cooking spray or butter.

Step 02

In a skillet over medium heat, cook the breakfast sausage until browned. Drain excess grease and set aside.

Step 03

In a large bowl, whisk together the eggs, milk, salt, pepper, and garlic powder. Stir in the cooked sausage, cubed bread, cheese, bell pepper, and onion until well combined.

Step 04

Pour the mixture into the prepared baking dish. Cover tightly with plastic wrap and refrigerate for at least 1 hour, or overnight.

Step 05

Remove the casserole from the fridge and let it sit at room temperature for about 10 minutes. Bake in the preheated oven for 45 minutes, or until set and golden on top.

Step 06

Let the casserole cool for a few minutes before slicing and serving. Enjoy with your favorite breakfast sides!

Extra Tips

  1. Feel free to customize the casserole with your favorite vegetables or seasonings to make it your own.

Nutritional Breakdown (Per Serving)

  • Calories: 380 kcal
  • Total Fat: 26g
  • Saturated Fat: 15g
  • Cholesterol: 195mg
  • Sodium: 85mg
  • Total Carbohydrates: 32g
  • Dietary Fiber: 3g
  • Sugars: 24g
  • Protein: 6g