Introducing a deliciously family-friendly Keto & THM Slow Cooker Breakfast Casserole. A protein-packed casserole overflowing with breakfast sausage, low carb biscuit pieces, and veggies all in a hearty egg custard. 

What Ingredients Are In This Keto Slow Cooker Breakfast Casserole?

To make this delicious slow cooker casserole you’ll just need a few basic breakfast ingredients and some keto biscuit pieces, which are simply made from the well know fathead dough.  Let’s talk about those ingredients and then we’ll get into the steps of making this recipe.

Eggs –  We’ve all heard how eggs are a great way to start any day off. They are packed with so much protein. 6 grams per large egg, which is fantastic considering they are so small and only 70 calories each.  They are so good for us and pretty affordable in most grocery stores if you don’t have chickens as we do. 

Heavy Whipping Cream – There is just a 1/2 cup of heavy whipping cream in this recipe but I love the richness it adds to the eggs when it is in the casserole. Of course, if you want to lighten up the recipe a bit or if you don’t have heavy whipping cream, you can use almond milk in this recipe and that will work fine too. 

Pork or Turkey Sausage – Sausage is a good source of protein, and it packs a lot of flavors. It’s also a popular item to put in breakfast casseroles because it is filling and usually a family pleaser.

Bell Pepper and Onion – The bell peppers and onions in this recipe are mainly there for a little added flavor. Since the carbs in both the red onion and bell peppers can add up pretty quickly we’ll only add about 1/3 cup of each to this recipe.

You can add or fewer onions and peppers, or swap them out. Check out the “More Filling Options” portion of this post right after the step-by-step pictures for some great ideas on other ingredients if you could substitute. 

Cheddar Cheese – You’ll just need about a half cup of some nice cheddar or your favorite cheese for the top of this casserole. Simply shred it and sprinkle it over the top. This step is totally optional and can be skipped if you would like. But, who would want to skip the cheese, right?

How To Make A Keto & THM Slow Cooker Breakfast Casserole.

Step 1: The first step is to mix up the low-carb cheese dough that will act as our biscuits in the casserole. Roll it out and then cut into equal size pieces, which can then be rolled into round bite-size balls. 

Step 2: Next, place the dough into the slow cooker, and gather the rest of the ingredients for the casserole including the cooked sausage, onions, bell peppers, and eggs.

One ingredient in the recipe that I forgot to include in the pictures is heavy cream. This is optional but it gives a great richness to the egg mixture. 

Step 3: Layer in the ingredients one by one. First, add the sausage over the dough pieces, then the onions and peppers.

Step 4: For the final step slowly pour over the egg mixture. You can leave it just as it is in layers or stir it up. That is totally up to you. After the egg mixture is in, place the lid on your slow cooker and cook the breakfast casserole on low for 3 hours. It is ready when you can stick a toothpick in the center and it comes out clean. 

More Filling Options for Ths Keto Slow Cooker Breakfast Casserole?

I kept this recipe really simple by just using sausage, onions, and bell peppers. But there are so many different possibilities that can be added to this casserole. It is totally adaptable to you or your family’s likes and dietary needs.

Here are some extra suggestions that would be delicious in this recipe. Keep in mind that each added ingredient will change the carb count and nutritional information. So I’ll provide the net carb counts each suggestion would add to the casserole. 

Mushrooms: Mushrooms would add a great savory flavor to the casserole. If you wanted to leave out the sausage they would even lend themselves to a meaty texture.

If you use mushrooms, go with a hearty one like portabella. Adding one cup of chopped portabella mushrooms would add a total of 3.6 net carbs to the whole dish, so not bad at all!

Crumbled Bacon: Bacon, what more needs to be said really, lol. The bacon can be used as a replacement for the sausage or along with the sausage if you want more of a meat lover’s breakfast.

There are some great store-bought options for real bacon crumbles these days which would be tasty as well as a time saver. Depending on what brand you purchase the bacon will add very little carbs to your whole recipe. 

Shredded Raddish or Turnips: Before turning your nose up at these, hear me out lol. If you’ve been low carb, keto, for very long you’ll know that both of these root veggies are used as substitutes for potatoes. A lot of breakfast casseroles include potatoes, so hopefully, you’re following me on this by now.

If this is something you’d like to try, then I recommend peeling them and using a grater to shred them up kind of like hashbrowns. Then sauté them just a few minutes to get some of the extra water out of them before adding them to the casserole mix.

If you choose to add radishes, 1 cup would add 2.3 net carbs to the recipe and the turnips will add about 6 net carbs for the whole casserole. 

Turkey Ham or Turkey Bacon: Don’t eat pork in your home, no worries, that is easily fixed by using good turkey bacon or turkey ham. These two options would still give you some added flavor and protein without adding too many carbs as long as you make sure you pick up a brand that isn’t loaded with extra sugar. 

I’m sure there are tons of other possibilities to toss in but I’ll let you explore those on your own. Please let me know what your favorite filling is in the comments on this post. 

Can This Breakfast Casserole Be Made Ahead of Time?

This breakfast casserole is a great meal to prep ahead of time. However, by that I mean you can totally prep the ingredients and the low carb/keto “biscuit dough” the night before and add it to the slow cooker insert.

That way you can drop the insert into your slow cooker and turn it on in the morning. Although it would be nice to have this casserole cooked and waiting on you the next morning, I don’t suggest this be cooked overnight.

In my opinion, the eggs are way too overcooked and rubbery when cooked longer than 3 or 4 hours. The outer eggs could possibly burn as well if your slow cooker runs hot and you cook it longer than the recipe suggest. Trust me, nobody will enjoy burned or rubbery eggs!

If you don’t have a slow cooker, or you prefer individual breakfast servings I suggest you hop over and check out these keto breakfast cups from my friend Denise over at My Life Cookbook. 

Here are a few ways you can prep ahead to save time:

• Make the low-carb biscuit dough the night before, or even up to a week before. This dough freezes wonderfully, so you could totally make it in advance and freeze it. I talk more about freezing this cheese dough in this post where I use it for pizza crusts if you want to read on that. 
• Cook the sausage the day before and keep it in the fridge until you’re ready to make this casserole.
• To save time you could totally use precooked sausage patties and links and just place those in the casserole instead of cooking your own sausage. Jimmy Dean has a brand I’ve used before and they are good. Just watch for those with too many carbs. 
• Chop your onions and peppers in advance or use the pre-chopped version you can find in the frozen food or the fresh produce sections of grocery stores.
• Mix and cook the casserole beforehand and reheat it when ready to serve. It reheats nicely. Simply cover with foil and place it in a preheated 350-degree oven and heat for about 20-25 minutes, or until warmed through. You could also microwave it but don’t nuke it too long or it will get tough and dry. 

How about another wonderful breakfast recipe from a blogger friend of mine? Check out this Low Carb Breakfast Hash. 

Yield: 8 Servings

Keto Slow Cooker Breakfast Casserole (THM "S")

Prep Time: 30 minutes

Cook Time: 4 hours

Additional Time: 10 minutes

Total Time: 4 hours 40 minutes

A hearty Keto and THM "S" breakfast casserole of sausage, eggs, and low carb "biscuits" topped with cheese and cooked in the slow cooker.

Print

Ingredients

• 1 Batch Cheese Dough for "Biscuits"
• 10 eggs, beaten
• 8 ounces of breakfast sausage, cooked
• 1/3 cup chopped red onion
• 1/2 cup green bell pepper, chopped
• 1/3 cup heavy whipping cream
• 1/2 cup of shredded cheddar, for topping 

Instructions

1. Make a batch of cheese dough for the "biscuits" per the link in the recipe and cut the dough into bite-size pieces.
2. Crack all the eggs into a large bowl and beat well.
3. Add in the heavy whipping cream, onions, peppers, and seasonings. Mix until combined. Set aside and prepare the sausage
4. Cook the sausage and drain well. Let the sausage cool slightly.
5. Spray the liner of the slow cooker very well with cooking spray. Add the biscuit piece to the bottom of the slow cooker.
6. Top the pieces with the cooked sausage in an even layer.
7. Slowly pour the egg mixture over the low-carb biscuit pieces and sausage.
8. Place the lid on the slow cooker and cook the Keto Slow Cooker Breakfast Casserole on low for 3 hours
9. After 3 hours remove the lid and top with the shredded cheese and replace the lid. Let the cheese melt for ten minutes before serving.
10. Serve hot.

Notes

Note: Since slow cookers will vary in how hot each one gets, I recommend checking the casserole around the 2-hour mark. If the center is set, with no wobble test it with a knife. If it comes out clean it is ready.

Nutrition Information

Yield

10

Serving Size

1/2 cup
Amount Per ServingCalories 334Total Fat 23gTrans Fat 0gCholesterol 223mgSodium 442mgSugar 1gProtein 14g

I am not a nutritionist. If you have strict dietary needs I always recommend using an online nutrition calculator to calculate your totals using your exact brands you're using in this recipe as values may vary per brand.

Did you make this recipe?

Visit My Table of Three

Keri Bucci

I am a southern girl through and through that loves to laugh, cook, read and spend time with family. My passions outside of home schooling my son are ministering to those in need and creating art in the kitchen! Every day is an adventure in our little house and I wouldn’t trade it or the chance to share here with you for anything!