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Home » Recipes » Best Breakfast & Brunch Recipes

Overnight Crockpot Breakfast Casserole

Published: Nov 6, 2024 · Updated: Apr 16, 2025 by Marye

Easy Crockpot breakfast casserole is full of potatoes, cheese, sausage, & eggs. Everything cooks overnight so it's perfect for busy holiday breakfasts and brunches. We love it for Christmas morning! This recipe was prepared in a 6 qt. crockpot.
Total time for the recipe to be finished.Total Time 8 hours hours 15 minutes minutes
Jump to Recipe
Overhead view of the finished casserole for the feature image.
Overhead view of the casserole with text overlay for Pinterest.

First published December 7, 2022. Last updated April 16, 2025 for editorial improvements.

Overhead view of the finished casserole in the crockpot.
Table of Contents
  • 🧾 Gather your ingredients: what you'll need
  • 🔪 Step-by-step guide: instructions for success
  • 📖 Recipe
  • Marye's Tips
  • 📖 Make it your own: yummy variations
  • 👩‍🍳 Let's answer those questions: FAQs
  • 📚 More Southern comfort: related recipes you'll love
  • 🍽️ Perfect pairings: what to serve with
  • 🍽️ No waste: creative ways to repurpose
  • 💬 Comments

Save this recipe by clicking on the ❤️ heart on the right-hand side of the screen or in the recipe card.

5 star rating
5 star rating
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5 star rating
This is absolutely the best crockpot breakfast meal I’ve made yet !
I made this for my employees for a breakfast treat !! Easy and delicious I’ll be making it again for Christmas morning! Thank you
Lisa

This overnight Crockpot breakfast casserole is your new holiday hero—no early-morning scrambling, no pans to scrub, just you waking up like the domestic goddess you are to a kitchen that smells like you tried. Layers of fluffy eggs, melty cheese, crispy hash browns, and sausage do their magic while you sleep. It’s perfect for feeding a crowd on Christmas morning, lazy weekends, or whenever the in-laws show up unannounced. Prep it the night before, toss it in the slow cooker, and wake up to hot, hearty comfort with zero effort. You deserve a gold star and a second helping.

🧾 Gather your ingredients: what you'll need

Ingredients for this casserole.

🔪 Step-by-step guide: instructions for success

A whisk in a bowl with beaten eggs.

Whisk the eggs, milk, salt, and pepper together in a large bowl.

Hashbrown potatoes covering the bottom of the crockpot.

Place ⅓ of the potatoes on the bottom of the crockpot.

The cooked sausage, onions, and peppers are layered over the cheese in the crockpot.

Spoon ⅓ of the sausage, red and green bell peppers, and diced yellow onions on top of the potatoes.

Grated cheese is layered over the sausage.

Top with cheese, repeat layers twice, and pour egg mixture over top.

⏲️ Marye's time saving hacks -

Grab diced onions and diced bell peppers in the produce section of your grocery store. You'll save 10 minutes of chopping time.

📖 Recipe

Overhead view of the finished casserole for the feature image.

Crockpot Christmas Breakfast Casserole Recipe

4.78 from 226 votes
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Easy Crockpot breakfast casserole is full of potatoes, cheese, sausage, & eggs. Everything cooks overnight so it's perfect for busy holiday breakfasts and brunches. We love it for Christmas morning! This recipe was prepared in a 6 qt. crockpot.
Course Breakfast
Cuisine American - Vintage,Holiday
Prep Time: 15 minutes minutes
Cook Time: 8 hours hours
Total Time: 8 hours hours 15 minutes minutes
Servings:8
Calories:550
Author:Marye Audet-White

Ingredients

  • 12 eggs
  • 1 cup milk
  • 2 pounds hash brown potatoes
  • 1 pound bulk breakfast sausage, cooked
  • ½ cup onions, diced
  • ½ cup bell peppers red & green , diced
  • 1 ½ cups cheddar cheese , shredded from a block
  • 1 ½ cups pepper jack cheese, shredded from a block
  • 1 teaspoon kosher salt, if you use regular table salt use half as much
  • ½ teaspoon black pepper

Instructions

  • Spray the inside of the crock with no-stick cooking spray. Set aside.
  • Mix the two shredded cheeses together and set aside.
  • Mix the cooked sausage, onions, and peppers and set aside.
  • Beat the eggs until well blended.
  • Whisk in milk, salt, and pepper. Set aside.
  • Layer ⅓ of the potatoes in the bottom of the crock.
  • Next sprinkle with ⅓ of the sausage mixture.
  • Top with 1 cup of mixed cheese.
  • Repeat 2 more times to have a total of 3 layers.
  • End with cheese mixture.
  • Pour the egg mixture over the top.
  • Cook on low for 8 hours.

Notes

Storage:
If you have leftovers, spoon them into an airtight container. Like most egg bake recipes, the leftovers will last for about three days in the refrigerator. Freezes well for 3 months. 
Tips:
  • Spray the crockpot well with nonstick cooking spray, because the cheese and potatoes tend to get all crispy around the edges. It's yummy but can stick if not greased well.
  • Or, use a slow cooker liner if you prefer no clean-up at all. Just be careful not to cut the liner and accidentally serve it stuck to the bottom of your breakfast casserole!
  • Drain off the excess fat if you're browning the sausage yourself. Breakfast meat tends to have a lot of extra grease, and you don't need that in the casserole.
  • Want breakfast now? Prepare as directed, layering the ingredients into a large skillet. Bake at 375 degrees F for about 30 minutes, or until the eggs are cooked all the way through.
  • You can assemble and refrigerate up to 12 hours ahead of time.
You'll find more helpful tips and variations in the body of the post.

Nutrition Facts

Calories: 550kcal | Carbohydrates: 24g | Protein: 31g | Fat: 37g | Saturated Fat: 16g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 13g | Trans Fat: 0.1g | Cholesterol: 330mg | Sodium: 1048mg | Potassium: 670mg | Fiber: 2g | Sugar: 3g | Vitamin A: 1116IU | Vitamin C: 22mg | Calcium: 402mg | Iron: 3mg

Nutrition information is estimated as a courtesy. If using for medical purposes, please verify information using your own nutritional calculator. Percent Daily Values are based on a 2000 calorie diet.

This recipe has been tested several times. If you choose to use other ingredients, or change the technique in some way, the results may not be the same.

🤫 Marye's secret for zhuzhing it up -

I will often switch Pepper Jack for the Monterey Jack cheese and stir in a handful of chopped cilantro to give it more of a Tex-Mex flavor.

zhuzh: verb. To make something more interesting or attractive

A serving of teh casserole on a plate showing the layers.

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Marye's Tips

  • Beating the eggs with a whisk is the key to fluffy eggs. Try to incorporate in as much air as possible.
  • No slow cooker? Here are some options for when your slow cooker is out of commission.

📖 Make it your own: yummy variations

Slow cooker breakfast recipes are easy to adapt, so you can make something your entire family will love! Here are some ideas:

  1. I prefer to use regular sausage, but for a hearty breakfast that's just a touch lighter on the calories, swap in some turkey sausage.
  2. Some people like to use frozen tater tots instead of shredded potatoes.
  3. No Pepper Jack? Monterey Jack is good in this breakfast Christmas casserole, too.
  4. Add a can of diced green chiles to the green peppers mixture for spice!
  5. Garnish with green onions or parsley for a delicious herbal flavor.
  6. Don't forget your favorite toppings. Serve with hot sauce, pico de Gallo, a scoop of sour cream, ketchup, or even some maple syrup for a sweet touch.

👩‍🍳 Let's answer those questions: FAQs

Have other questions? Ask me in the comments!

Can I make this in advance on a Saturday morning and then start it cooking on Saturday night?

You can! Thankfully, there's a little bit of lee-way when it comes to eggs out of their shells. After prep, cover the crockpot dish with plastic wrap or the lid and put it in the fridge until later that night.

But what if I don't want the casserole to cook overnight? Can I shorten the crockpot cook time?

I don't love how this Crockpot Christmas casserole comes out when the crockpot cook time and temperature have been altered. However, see the Things to Know section to cook this recipe in a cast iron skillet, instead.

Can I frreeze this breakfast casserole?

Yes, this freezes well. Let the casserole cool then cut into serving sized squares. Freeze in individual freezer bags for a quick and easy breakfast.

A serving of the casserole being removed from the pan.

📚 More Southern comfort: related recipes you'll love

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    Breakfast Burrito Casserole
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5 star rating
5 star rating
5 star rating
5 star rating
5 star rating
This recipe is excellent! I put everything in my crockpot the night before our annual breakfast event at work. Everyone raved about how delicious this was. I doubled the recipe and there was not one drop left! It's easy to make and forget about and it tastes even better!
Joanie

🍽️ Perfect pairings: what to serve with

A skillet full of fried apple slices.

Southern Fried Apples are a delicious side dish for just about any brunch! Cinnamony, buttery, and sweet.


Close up of the sweet rolls on a white plate.

Easy Christmas Danish are so pretty on the table! They're festive plus they're baked in the shape of a pull-apart Christmas tree! Or, try these fluffy sour cream cinnamon rolls.

🍽️ No waste: creative ways to repurpose

Here are five delicious ways to repurpose leftover crockpot breakfast casserole:

  1. Breakfast Burritos – Scoop portions of the casserole into tortillas, add some salsa, avocado, or extra cheese, and roll them up for quick breakfast burritos. Perfect for freezing and reheating, too!
  2. Hash Brown Bowl – Reheat a serving, then top with fresh ingredients like diced tomatoes, green onions, hot sauce, and a dollop of sour cream for a hearty breakfast bowl with extra flavor.
  3. Egg Muffins – Press spoonfuls of the casserole into a greased muffin tin, add a sprinkle of cheese on top, and bake until heated through. They’re easy to grab and go!
  4. Breakfast Quesadilla – Spread some casserole filling on a tortilla, add shredded cheese, then fold it in half and cook in a skillet until the tortilla is crispy and the cheese is melted. Great with a side of salsa!
  5. Loaded Breakfast Sandwich – Layer a slice of the casserole on a toasted English muffin or bagel, add some fresh spinach, and top with a slice of tomato or avocado for a filling breakfast sandwich.

These creative twists will help you enjoy every last bite!

I love sitting around on Christmas morning, drinking a creamy coffee, and watching the kids & grandkids open presents. It's so much more fun than listening to all the commotion and laughter while I'm working away in the kitchen to get breakfast on the table!

This breakfast casserole might change your life. 🙂

Overhead view of the finished casserole for the feature image.

Don't lose this recipe!

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About Marye

Meet Marye Audet, a wizard in the kitchen and a storyteller at heart. Marye is like your eccentric but fun aunt who knows all the secret recipes and isn't afraid to spill them.

Comments

    4.78 from 226 votes (201 ratings without comment)

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    Love it? Give it 5 stars!




  1. JB says

    February 23, 2025 at 3:10 pm

    4 stars
    I made this for a breakfast for dinner party. Everyone seemed to like it. I felt it needed way more seasoning. I would probably salt and pepper each potato layer if I do this again. I served it with salsa and sour cream on the side.

    Reply
    • Marye says

      February 24, 2025 at 9:11 am

      Seasoning should always be adjusted to your tastes.

      Reply
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Marye Audet-White, founder of Restless Chipotle Media

Hey Y'all, I'm Marye

Welcome to my kitchen! ☕

NY Times bestselling author. 10 cookbooks. Mom of 8 kids. Homeschooling mom for 22 years. Addicted to Hallmark Christmas Movies. Collector of old cookbooks.

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