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Overnight Breakfast Casserole

This may be the easiest Overnight Breakfast Casserole recipe you’ll ever enjoy. All you need is 15 minutes of prep and a handful of simple ingredients. Sleep in, pop your breakfast bake  in oven, and enjoy the day. 

easy overnight breakfast casserole recipe breakfast bake
This easy overnight breakfast casserole will brighten the family’s morning.

Overnight Breakfast Casserole

Happy almost weekend, Friends!

Who’s ready for Super Bowl LII this Sunday?! OMG, we are so sad about the Vikings, but are thrilled that our nice town of Minneapolis gets to host the huge event this year. Woo hoo!

So I had some daydreams about making a game-day recipe for this post, but the weekend is shouting out at me for brunch, so here I am with the easiest Overnight Breakfast Casserole recipe you’ll ever gladly make.

If you’re really hungry for game-day eats, my favorite sporty party dips are this kickin’ Jalapeno Popper Party Dip and this ridiculously mouthwatering Easy Cheesy Buffalo Chicken Dip.

Of course, this exciting 7-Layer Mexican Dip is a party in itself, as is this 5-Minute Real Guacamole with a bag of crunchy tortilla chips.

Now, let’s talk weekend brunch…

easy overnight breakfast casserole recipe breakfast bake
This overnight breakfast casserole takes only 15 minutes to prepare.

What You’ll Love

I mentioned this would likely be the easiest Easy Overnight Breakfast Casserole to grace its way into your kitchen. It’s also stunningly deeeelicious, with all the flavors you’d want in a hot, comforting dish.

This breakfast bake deserves some serious accolades because:

  • It takes 15 minutes to quickly prep and assemble completely. I actually timed myself.
  • You pop it into the fridge overnight and go to sleep (probably after surfing the net a little)
  • You get extra zzzz’s in the morning. It’s kinda what I live for.
  • Let your breakfast casserole bake while you’re getting ready in the morning. (In my case, Hubby’s contribution is putting said casserole in the oven while I get ready.)
  • There are less than 10 ingredients in this whole situation. Enough said.

If you’ve got bread, sausage, milk, and cheese, you’re all set.

Don’t forget the coffee and this pancake puff on the side. 🙂 And if you want to explore more delicious breakfast casseroles you might enjoy this easy biscuits and gravy casserole.

easy overnight breakfast casserole recipe breakfast bake
Sausage, eggs, and cheese go into this delicious breakfast casserole.

You may really These Blueberry Crumb Bars


Did you make this?

Please give us a rating and comment below. We love hearing from you!

A Casserole of Breakfast Meal

Easy Overnight Breakfast Casserole

5 from 6 ratings
This Easy Overnight Breakfast Casserole is extremely delicious, flavorful, and so simple. It takes 15 minutes of prep and assembly, with less than 10 ingredients. A favorite weekend brunch.
Prep Time: 15 minutes
Cook Time: 1 hour 5 minutes
Total Time: 1 hour 20 minutes
Servings: 10 servings
Author: Amy Dong


  • 1 lb ground breakfast sausage
  • 1 medium onion, chopped
  • 6 large eggs
  • 1 tsp kosher salt
  • ½ to 1 tsp garlic powder
  • ¼ tsp freshly ground black pepper
  • 2 cups milk, I use whole
  • 4 cups cubed French or Italian loaf, packed
  • 2 cups sharp cheddar cheese, plus 1/2 cup more for topping
  • Optional: chopped parsley for garnish


  • In a large heavy skillet, cook and break apart/crumble sausage with onions over medium high heat. Once evenly browned, drain and set aside.
  • In a bowl, add eggs and beat lightly. Add salt, garlic powder, pepper, and milk. Whisk together to combine well. Add bread cubes and gently stir to coat well. Add cheese and gently fold to incorporate.
  • Grease a 9×13 baking dish. Pour egg/sausage mixture evenly into dish, ensuring edges are evenly covered as well. Cover tightly with foil and chill overnight.
  • Remove casserole from fridge and let sit at room temp while you preheat oven to 350F with rack on lower middle position. Keeping casserole covered with foil, bake about 50-60 minutes or until center is set. Uncover and sprinkle 1/2 cup more cheese evenly on top; bake 10-15 minutes more or until top is golden brown. Garnish with chopped parsley if desired.

Nutrition (per serving)

Calories: 560kcal | Carbohydrates: 53g | Protein: 27g | Fat: 26g | Saturated Fat: 11g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 9g | Trans Fat: 0.1g | Cholesterol: 159mg | Sodium: 1295mg | Potassium: 369mg | Fiber: 2g | Sugar: 7g | Vitamin A: 483IU | Vitamin C: 1mg | Calcium: 291mg | Iron: 5mg
Course: Breakfast, brunch
Cuisine: American
Method: Bake

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Add a comment

Recipe Rating


    • Susan
    • 5 stars

    Took this casserole to work today for the breakfast part of our Easter office potluck and it was gone in 30 minutes.
    I have made this breakfast casserole many times and it never disappoints. The only changes I make are substituting half the eggs for egg substitute, a little extra garlic powder, a few shakes of poultry seasoning in the mixture, and sprinkle the top with ground sage before popping it in the fridge overnight. However, this casserole is still delicious without my changes. I adjust the recipe for my family’s taste preferences.

      • Amy Dong

      That’s amazing, Susan! So happy everyone loved this 🙂

    • Pearl Rose McIntyre

    why over night ??

      • chewoutloud

      Pearl, we usually prep it overnight because I’m not a morning person so I really like being able to just wake and bake 😉 However, if you have time in the morning, you can most definitely do the entire recipe and bake it that same day. Enjoy!

    • Syntich

    Really delicious looking and seems easy to make.

    • nicoleflintkontrol

    This is perfect for a weekend brunch! Seems very easy to make!

    • Jenny

    Yummy!! I think id use shredded potatos in place of the bread but looks great!!

    • Kylie wenn (cre8tone)

    Such an ideal breakfast.. Nice and yummy! Easy to prepare as well..

    • Ellie Plummer

    Ooh this sounds delicious, I bet this is lovely on a relaxing Sunday morning.

    • tanviidotcom

    This sure sounds easy and delicious. Will give it a try.


    • Nati

    oh, my! How have I never thought of doing a overnight casserole for breakfast! Only yesterday I was burning my brain trying to think of a new option for our Sunday family breakfast. I’m totally trying this next Sunday!

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