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The Ultimate Overnight Slow Cooker Breakfast Casserole

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The holidays are busy, but this overnight slow cooker breakfast casserole is the best way to make your holiday easy.  From prep to clean up, this meal is the perfect way to allow a little breath and time to enjoy your family. 

Overnight Slow Cooker Breakfast Casserole

Overnight Slow Cooker Breakfast Casserole

I don’t know about you, but when the holidays start, it is pretty much non-stop, so by the time Christmas hits, I am beat and the last thing I want to do is cook a huge breakfast and clean that up.  So I present you with the absolutely best slow cooker breakfast casserole that will change your holiday mornings!

savory overnight breakfast casserole

Recipe Walkthrough

Check the ingredients below and follow along as we get this slow cooker breakfast casserole made.  I always prep this right before I go to bed on Christmas Eve.  First you brown the breakfast sausage.  You could just put it in the slow cooker raw if you want, but I prefer to brown it before layering it in. 

savory breakfast casserole

Next you are going to take 1/2 the bag of frozen shredded potatoes and place them on the bottom.  These will stick and you can see that I am using a slow cooker liner because again, I don’t want to clean.  I have found that if I use a butter cooking spray, the potatoes do not stick as much. 

Prepping a breakfast casserole.

Next layer on a heaping amount of delicious shredded cheese. I just buy the already shredded cheese but if you want to go through the motion, you can shred your own potatoes and cheese. 

layered breakfast casserole

Place about 1/2 the browned ground breakfast sausage atop the cheese.  I do try to spread this pretty evenly. Again, you could put this in raw and just spread it by hand to get it pretty even, but that is just a preference. 

slow cooker liners

Complete that series of layering one more time.  Potatoes, sausage and then cheese.  I do typically do the second layer of cheese on top, but you can easily put it under the sausage.  From there, season your casserole with garlic salt. 

easy breakfast casserole

Then beat together eggs and milk and poor that over the layers of potatoes, sausage and cheese. Once done, place the lid on, set it on low and cook for 8 hours.  You will wake up to a wonderfully easy and delicious overnight slow cooker breakfast casserole with super easy clean up and a relaxing holiday morning!

overnight breakfast casserole

Grab the Recipe

4 from 2 votes

Overnight Slow Cooker Breakfast Casserole

This is the best slow cooker breakfast casserole that will make your life so easy, from prep to clean up, your family will thank you!

Prep Time 10 minutes
Cook Time 8 hours
Servings 10


  • 1 roll Breakfast Sausage
  • 1 30 oz bag Frozen shredded potatoes
  • 1 32 oz Shredded colby jack cheese
  • 8-12 eggs beaten
  • 4 Cups milk
  • 1 tbsp garlic salt


  1. Brown the ground breakfast sausage

  2. Layer 1/2 the bag of potatoes on the bottom of the slow cooker (pro-tip, use a slow cooker liner for easy clean up)

  3. Cover the potatoes in shredded cheese

  4. Layer 1/2 the ground sausage atop the cheese and potatoes

  5. Do another layer of potatoes, sausage and cheese

  6. Season with garlic salt

  7. Beat the eggs and milk together and pour over the mixture

  8. Cook on low for 8 hours and enjoy a wonderful morning meal!

Slow cooker breakfast casserole

If you like this overnight slow cooker breakfast casserole check out this recipe.

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Recipe Rating

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Friday 6th of May 2022

Is this covered the whole time?


Friday 6th of May 2022

I do keep mine covered.

Cheryl Black

Saturday 23rd of April 2022

I made this last Sunday. It was good but my only complaint is it came out watery. What did I do wrong?


Sunday 24th of April 2022

Maybe decrease the milk. I am at altitude in Colorado when cooking and forgot to account for that.


Sunday 17th of April 2022

Really good! Literally made this overnight for Easter today! I’m wondering if using less milk next time would make it stick together more out of the pot?


Monday 18th of April 2022

I am so glad! The milk idea is worth a try for sure!


Tuesday 22nd of March 2022

Do you stir within the 8 hours and can you cook for 10-12 hours and does it change the recipe?


Wednesday 23rd of March 2022

I dont stir. I toss it all in, stir it once and then let it cook.

I cook it overnight and set the time for about 6 hours and then let it warm past that. I am not sure how 10-12 hour cook would go.


Friday 18th of February 2022

Does substituting the milk make a difference? I'm lactose intolerant and can't handle that much milk AND cheese. So I used almond milk.


Monday 21st of February 2022

I would assume it would make a small difference but that is just because we eat lactose rich foods, so if you are used to lactose free it would probably be fine. I have never tried it.

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