Easy Breakfast Casserole

This customizable breakfast casserole combines eggs, cheese, and bread with your choice of add-ins. Perfect for feeding a crowd, you can prep it the night before and bake in the morning.

Featured in Morning Meal Ideas.

Fatiha
Updated on Sun, 05 Jan 2025 01:33:44 GMT
A slice of baked egg casserole topped with mushrooms, broccoli, and green onions on a white plate. Pin it
A slice of baked egg casserole topped with mushrooms, broccoli, and green onions on a white plate. | zestplate.com

Last weekend was pure chaos. You know those moments when you're having so much fun on vacation that you completely forget about real-life responsibilities? Well, there I was, standing in front of an almost empty fridge, suddenly remembering I promised to feed my friend's kids that day. Talk about a mini heart attack! But as I opened the fridge door, I spotted my saving grace: some eggs, milk, cheese, leftover sausage from yesterday's breakfast, a bit of broccoli, and one lonely corn on the cob. A quick peek in the freezer revealed some bread, and just like that, my inner cook started dancing. No need for the boxed mac and cheese today!

The Magic of Morning Casseroles

Breakfast casseroles are my ultimate lifesaver in the kitchen. All you really need are eggs, cheese, milk, and bread—such a simple combo that creates something amazing. I've been making these forever, and what I love most is how forgiving they are. Toss in whatever meat you've got—sausage is my personal favorite, but bacon works beautifully too. Going meatless? Load it up with veggies like zucchini, broccoli, and some fresh basil. It's practically impossible to mess up.

Your Shopping List

  • Eggs: Grab 6 large ones—these guys are the stars of our show.
  • Milk: You'll need 1 ½ cups. I usually grab whole milk because it makes everything creamier, but 2% works fine too.
  • Cheddar cheese: 1 cup shredded. The sharper the better if you ask me!
  • Bread: 6 slices, cut into chunks. Slightly stale bread actually works better here—it soaks up all that eggy goodness without getting mushy.
  • Vegetables: Whatever you've got lying around—broccoli and corn are my current fridge survivors.
  • Sausage: About a cup of leftover cooked sausage, all crumbled up.

Kitchen Time

First Up: Getting Everything Ready
Turn your oven to 350°F. While it's warming up, crack those eggs into a bowl, pour in your milk, and toss in the cheese. Give it all a good whisk. Chop up your bread into chunks—nothing fancy, just bite-sized pieces.
Building Your Breakfast
Grab a casserole dish, spray it with some cooking spray if you've got it. Spread your bread chunks all over the bottom. Pour that egg mixture right on top—make sure all the bread gets a good soaking. Now scatter your sausage and veggies throughout.
Into the Oven
Pop that dish in the oven and let it do its thing for about 35 to 40 minutes. You'll know it's done when the top looks golden and a knife comes out clean when you poke it in the middle.
Time to Dig In
Give it 5 minutes to settle (I know it's hard to wait!), then cut into squares and serve it up while it's nice and hot.
A baked casserole with eggs, cheese, ham, broccoli, and mushrooms in a white dish. Pin it
A baked casserole with eggs, cheese, ham, broccoli, and mushrooms in a white dish. | zestplate.com

Kitchen Wisdom

After countless morning rushes making this casserole, I've picked up some tricks. Mushroom lovers, give those mushrooms a quick sauté first or you'll end up with soggy spots. Raw veggies work fine but cut them small unless you like them extra crunchy. Always cook your meat before adding it in—learned that one the hard way! Want a firmer casserole? Throw in an extra egg or two. It's really that simple.

Perfect Pairings

This casserole is pretty much a complete meal in one dish. You've got your protein, your veggies, and your bread all wrapped up in cheesy goodness. For breakfast, I love serving it with some fresh fruit on the side. Making it for dinner? Toss together a quick salad. Skip the veggies in the casserole? Sauté some on the side. Going meatless? Fry up some bacon to serve alongside—it'll make everyone happy.

Night Before Prep

Want to know my favorite thing about this recipe? You can throw it all together the night before. Just cover it with foil, pop it in the fridge, and bake it in the morning. Perfect for those crazy mornings when you've got a house full of hungry people and zero energy to cook.

Leftovers 101

Got leftovers? Lucky you! This casserole keeps beautifully in the fridge for a few days. Just wrap it up tight. When you're ready for round two, either microwave individual pieces until they're steaming hot, or warm up the whole thing in a 350°F oven for about 15 minutes.

A baked casserole dish filled with a colorful mixture of eggs, ham, mushrooms, and broccoli, topped with chopped green onions. Pin it
A baked casserole dish filled with a colorful mixture of eggs, ham, mushrooms, and broccoli, topped with chopped green onions. | zestplate.com

Your Kitchen, Your Rules

This recipe is just a starting point. Switch up the meat—try crispy bacon or leftover ham. Load it with your favorite veggies. Sprinkle in fresh herbs from your garden. Swap the cheddar for that fancy cheese you've been saving. Some of my best versions came from simply using whatever was hanging out in my fridge. That's the beauty of cooking—sometimes the best meals come from just winging it!

Frequently Asked Questions

→ Can I make this casserole ahead of time?

Yes, you can prepare the casserole the night before and store it in the fridge. Just bake it the next morning when you're ready to serve.

→ What if my bread isn't day-old?

Fresh bread can be dried out by placing slices in a 200°F oven for 10 minutes. This helps the bread absorb the egg mixture better.

→ Can I add different vegetables?

The recipe is very flexible. You can add any vegetables you like, just remember that mushrooms should be sautéed first to remove excess moisture.

→ How do I know when it's done baking?

The casserole is ready when the top is browned and the center springs back when touched. Let it cool for 10 minutes before serving.

→ Can I freeze this casserole?

You can freeze the baked casserole for up to 2 months. Thaw overnight in the fridge and reheat in the oven until warm throughout.

Easy Breakfast Casserole

A versatile egg and cheese breakfast casserole that you can customize with your choice of meats and vegetables. Make ahead and bake when ready.

Prep Time
15 Minutes
Cook Time
50 Minutes
Total Time
65 Minutes
By: Fatiha

Category: Breakfast

Difficulty: Easy

Cuisine: American

Yield: 8 Servings (8 portions)

Dietary: ~

Ingredients

01 6 to 10 large eggs.
02 2 to 3 cups grated cheddar cheese.
03 6 slices day-old bread, cubed.
04 2 cups milk.
05 Salt to taste.
06 Pepper to taste.
07 1 cup corn kernels (optional).
08 1/2 cup chopped broccoli (optional).
09 1/2 cup sliced mushrooms (optional).
10 1/4 cup sliced green onions (optional).
11 1 cup cubed ham or cooked sausage (optional).
12 3 slices cooked bacon, chopped (optional).
13 1 teaspoon Herbes de Provence (optional).
14 1/4 to 1/2 teaspoon cumin or curry powder (optional).

Instructions

Step 01

Heat oven to 350°F.

Step 02

Beat eggs in large bowl. Mix in milk and cheese. Add bread and stir until moistened.

Step 03

Stir in your choice of additions, salt, and pepper. Add more eggs if needed to cover ingredients.

Step 04

Butter a 9x13-inch casserole dish. Pour in mixture.

Step 05

Bake 50-60 minutes until top browns and center springs back.

Step 06

Cool for 10 minutes before serving.

Notes

  1. More eggs make firmer casserole.
  2. Sauté mushrooms first to remove moisture.
  3. Can be prepared night before.
  4. Fresh bread needs 10 minutes at 200°F to dry.

Tools You'll Need

  • 9x13-inch casserole dish.
  • Large mixing bowl.

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Eggs.
  • Dairy.
  • Wheat.

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 375
  • Total Fat: 24 g
  • Total Carbohydrate: 17 g
  • Protein: 23 g