My make-ahead breakfast casserole is so easy to make it might just become your go-to Sunday brunch meal! It’s the perfect breakfast casserole for anytime, but we always love eating it when we have big family gatherings.

Try it and you’ll agree- it’s so easy!

Breakfast Casserole

Breakfast casserole has definitely become one of those meals my kids enjoy eating anytime I make it!

It’s also Christmas morning tradition for our family. It’s so easy that I make it throughout the year too, but Christmas is the one time that it has to be on the table.

Like, it’s expected. If breakfast casserole was not a part of our Christmas morning spread, my family will wonder what was wrong.

I prep it the night before, and put it in the fridge. Then, when we get up in the morning – I pop it in the oven and it is ready to eat soon after I’ve had my first cup of coffee with homeamde coffee creamer.

What is Breakfast Casserole?

Breakfast casserole is a blend of delicious ingredients like ground sausage, eggs, bread cubes, and cheese baked together into a delicious dish.

This easy recipe comes together quickly and can be prepared the night before, making it an overnight breakfast casserole you’ll want to wake up to!

Why You’ll Love My Easy Breakfast Casserole

This is not just any breakfast; it’s the best breakfast casserole recipe you’ll ever try!

It’s simple to make, full of flavor, and perfect for feeding the entire family on a lazy weekend morning or during special occasions like Christmas morning.

The great thing about this easy breakfast casserole recipe is that it’s versatile – you can add in extras like bell peppers or green onions to suit your taste.

Breakfast Casserole Ingredients

This classic breakfast casserole requires some basic ingredients.

Consider it a blank slate that you can customize any way you’d like. I’ve included ideas for you further down.

Here’s what you need to make my easy breakfast casserole:

ground breakfast sausage
mustard powder
salt
beaten eggs
milk
toasted white bread cubes
shredded mild cheddar cheese

How to Make Breakfast Casserole

Making this egg casserole recipe is duper simple!

Start by browning the sausage over medium heat in a large skillet.
In a large bowl, mix together mustard powder, salt, eggs, and milk.
Add the cooked sausage, bread cubes, and cheese into the egg mixture – stir to coat evenly.
Pour the whole thing into a greased baking dish and chill in the refrigerator overnight.
The next morning, bake until golden brown and set.

Variations and Add-ins

The best part of this easy recipe? You can switch it up!

Here are some ideas of ways to change up the flavors:

crispy bacon
sauteed mushrooms
cooked fresh veggies
red pepper flakes
red or green bell peppers
sautéd yellow onion (or any kind of onion)
poblano peppers
diced ham instead of ground sausage
top with ingredients like green onions, fresh tomatoes, and salsa
add some additional spices like garlic powder or onion powder

Don’t be afraid to use different types of shredded cheese it if you’d like! Here are some ideas: pepper jack, monterey jack, white cheddar, etc.

Make Ahead Breakfast Casserole

The great thing about this hearty breakfast casserole is that you prepare it the night before. That makes for a super easy, comforting breakfast.

Simply follow the recipe, cover the baking dish with plastic wrap, and let it sit in the fridge overnight. The next morning, all you have to do is bake and serve!

Storing Leftovers

If you have leftovers (which might be unlikely because it’s that delicious!), store them in an airtight container in the refrigerator.

They’ll stay fresh for up to three days. Just heat up individual portions when you’re ready for a quick and easy meal.

Freezing Leftovers

This breakfast casserole also freezes well! Allow the casserole to cool completely before cutting it into individual portions. Store each portion in an airtight container or wrap tightly with aluminum foil, then freeze.

When you’re ready to enjoy, simply thaw in the refrigerator and reheat in the oven or microwave. Enjoy this great recipe time and time again!

More Tasty Breakfast Recipes

Print Pin

Make-Ahead Breakfast Casserole

Author Mrs Happy Homemaker

Ingredients

1 pound ground sausage
1 teaspoon mustard powder
1/2 teaspoon salt
4 eggs beaten
2 cups milk
6 slices white bread toasted & cut into cubes
8 ounces mild cheddar cheese shredded

Instructions

Crumble sausage in a skillet & cook ever medium heat until evenly browned. Drain.
In a medium bowl, mix together mustard powder, salt, eggs, & milk. Add the sausage, bread cubes, & cheese - stir to coat evenly. Pour into a greased 9x13 baking dish. Cover, & chill in refrigerator for 8 hours - or overnight.
Preheat oven to 350 degrees.
Cover, & bake 50 - 60 minutes. Uncover, & reduce reduce temperature to 325 degrees. Bake for an additional 30 minutes, or until set.

Simple Make-Ahead Breakfast Casserole (Cheese, Eggs & Sausage)