Overnight Breakfast Casserole
- By Amy Dong
- Updated Dec. 30, 2023
This may be the easiest Overnight Breakfast Casserole recipe youโll 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.

Overnight Breakfast Casserole
Happy almost weekend, Friends!
Whoโs 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 youโll ever gladly make.
If youโre really hungry for game-day eats, my favorite sporty party dips are this kickinโ 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, letโs talk weekend brunchโฆ
What Youโll Love
I mentioned this would likely be the easiest Easy Overnight Breakfast Casserole to grace its way into your kitchen. Itโs also stunningly deeeelicious, with all the flavors youโd 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 zzzzโs in the morning. Itโs kinda what I live for.
- Let your breakfast casserole bake while youโre getting ready in the morning. (In my case, Hubbyโs 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 youโve got bread, sausage, milk, and cheese, youโre all set.
Donโt forget the coffee and this pancake puff on the side. ๐ And if you want to explore more delicious breakfast casseroles you might enjoy this easy biscuits and gravy casserole.
You may really These Blueberry Crumb Bars
Did you make this?
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Easy Overnight Breakfast Casserole
Ingredients
- 1 lb ground breakfast sausage
- 1 medium onion, chopped
- 6 large eggs
- 1 tsp kosher salt
- ยฝ to 1 tsp garlic powder
- ยผ 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
Instructions
- 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 9ร13 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)
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