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    Home » Recipes » Casserole

    Easy Keto Breakfast Casserole (Low-Carb & Delicious!)

    By: Kimberly Grabinski Last Updated: February 3, 2025 27 Comments

    RecipePrintComments
    4.10 from 42 votes

    This Keto breakfast casserole with sausage is a simple and delicious recipe that'll please everyone in the house. You only need six essential ingredients, a skillet, a baking dish, and an oven. It's a healthy way to jump-start your morning with only 1 net carb per slice.

    keto breakfast casserole slice serve in a white plate
    Contents
    • ⭐ Breakfast Casserole with Sausage
    • 🍽 What you need
    • 🔪 How to make a Keto Breakfast Casserole
    • 💭 Top tips for success
    • 📖 Variations
    • 🧊 Storing and ♨️ Reheating
    • 👪 Serving Size
    • 📋 Recipe
    • 💬 Comments

    ⭐ Breakfast Casserole with Sausage

    While breakfast is the most important meal of the day for obvious reasons, it doesn't have to be complicated.

    This is why I want to share this low-carb breakfast casserole recipe. It's hearty, filling, and delicious. The best part: it's effortless to make, and you can clean it up in a flash! Plus, it uses simple ingredients, no need to empty the pantry.

    My kids are a lover of all things sausage and cheese. So I created this healthy low-carb breakfast with them in mind, and it was a huge hit. They loved it and kept asking for it again and again. The recipe combines the flavors of ground sausage, mozzarella cheese, and egg casserole.

    You'd think it takes hours to cook this dish because it goes in the oven, yes? NO. This no-fuss recipe can be put together in under an hour! This makes it a perfect Saturday or Sunday morning family breakfast recipe. Another option is my egg bake recipe prep in only 15 minutes!

    For more quick and easy breakfast recipes, check out these additional baked eggs recipes, especially my sausage egg muffin cups.

    🍽 What you need

    This fantastic keto breakfast casserole recipe requires only a handful of ingredients, and I'm pretty sure you already have them in your pantry, freezer, or fridge.

    Equipment

    • Large bowl
    • Whisk
    • Large skillet
    • Wooden spoon/spatula

    Ingredients

    • 1 pound ground pork or ground pizza sausage
    • 2 cups shredded mozzarella cheese
    • 6 large eggs
    • ⅛ teaspoon salt
    • ⅛ teaspoon pepper
    • ⅛ teaspoon Italian seasoning - optional

    Substitutes

    I use shredded mozzarella, however you can use any shredded cheese you have on hand or even mix and match various cheddar cheese options.

    Ground pork, ground sausage, breakfast sausage or any combination of these will work perfectly.

    🔪 How to make a Keto Breakfast Casserole

    You'll love how simple it is to make this low-carb breakfast casserole recipe. The meal prep takes 5 minutes and about an hour or less cooking time. Let's get started, shall we?

    • Preheat oven to 350 degrees Fahrenheit (177 degrees Celsius).
    • Heat the cast-iron skillet over medium-high heat. Oil is optional; you can add it if you like. When the skillet gets hot, add the ground sausage. Use a wooden spatula to break up the meat as it cooks. Continue to cook until the sausages are golden brown and crumbled. Remember not to stir too much, just periodically to allow the meat to brown appropriately and evenly. Once the meat is all browned and crumbly, remove from heat.
    • If you used oil, drain the fat in a colander and allow the sausage to cool.
    • In a mixer bowl, hand whisks the whole eggs, Italian seasoning, shredded cheese, salt, and pepper together.
    • Add the egg mixture into the cooked sausage and give it a good mix.
    • Pour the sausage mixture into the prepared baking dish (grease with oil or butter to prevent the meal from sticking). Bake in the preheated oven for about 45-55 minutes or until a bit firm and lightly springy to touch.
    • Serve and enjoy!

    💭 Top tips for success

    Want your Keto breakfast casserole to turn out as expected or even better while still having fun in the kitchen?

    • Don't be afraid to experiment. Get creative and add or remove ingredients to suit your preference. Don't like ground breakfast or Italian sausage? You can always use ground beef, turkey, or chicken. Don't like the taste of egg yolks? Just use the egg whites. Want to bake in muffin tins? By all means, go ahead.
    • The Italian seasoning is optional, but it gives this breakfast casserole keto a twist you'll love. I love its distinct flavor and use it on just about everything. It makes every bite full of flavor. That's why it's one of my go-to seasonings.
    • So I went all Italian on this recipe and used Italian sausage. But feel free to use pork breakfast sausage, turkey sausage, or whatever breakfast meat you want or have on hand.
    • Want to make it more fun? Make it with your little ones!
    one slice keto breakfast casserole serve in a white plate

    📖 Variations

    Like I've said before, casseroles are quite forgiving, unlike other recipes. You can toss in just about anything, and it usually turns out alright. The flavor will be different, of course, but you get to make it your own. Here's how you can give this keto breakfast casserole recipe a makeover without altering the flavor too much;

    Add veggies

    Feel free to incorporate veggies into the recipe. Fresh spinach, sliced mushrooms, tomatoes, bell peppers, zucchini are great additions.

    Add the cream

    Your breakfast casserole would still taste amazing without cream, but you can add heavy cream or whipping cream if you wish. I usually add heavy cream to my scrambled eggs for a fluffier, silkier, and extra rich texture. I bet it can work well on this low-carb egg casserole too.

    Sub the mozzarella cheese:

    This keto breakfast casserole can also be tasty with shredded cheddar cheese or parmesan cheese instead of mozzarella. Actually, any cheese will do but go for the ones that melt quickly. If you're sensitive to dairy or on whole30 or paleo diet, leave the cheese out. Otherwise this is keto diet friendly.

    Add your favorite seasonings:

    I love the herby flavor Italian seasoning brings to meals, especially this cheese casserole. But you can swap it out with any mix of herbs you have in your spice drawer. You can also try my homemade Ranch seasoning. It's a sure hit on this gluten-free breakfast casserole recipe. Garlic powder, onion powder, and smoked paprika are another great combo you can't go wrong with.

    🧊 Storing and ♨️ Reheating

    The best thing about this keto low-carb breakfast casserole is that it freezes well. So if you have leftovers, you can still enjoy them days or months after refrigeration/ freezing. But make sure the breakfast casserole is completely cool before refrigerating or freezing.

    Fridge

    For maximum flavor and freshness, refrigerate the casserole for 3-4 days. Ensure you store it in an airtight container.

    To reheat microwave until hot and serve.

    Freezer

    This keto breakfast casserole can last up to 3 months in the freezer. You can opt to freeze it whole or divide it into smaller portions. Simply double-wrap with plastic wrap and place it in the freezer. You can cover it with aluminum foil to hold its shape.

    Unthaw in your fridge the night before, and microwave until how and serve.

    👪 Serving Size

    Make your breakfast meal one to remember with this flavorful keto breakfast casserole recipe. It tastes decadently delicious, very satisfying, and you only need to mix a few ingredients together and toss it in the oven to feed 6 people. I assure you the whole family will go nuts over this one.

    📋 Recipe

    one slice keto breakfast casserole serve in a white plate

    Keto Breakfast Casserole

    This keto breakfast casserole with sausage is a simple and delicious recipe that'll please everyone in the house. You only need six essential ingredients, a skillet, a baking dish, and an oven. It's a healthy way to jump-start your morning.
    4.10 from 42 votes
    Print Pin Rate Save Saved! Share
    Course: Breakfast
    Cuisine: American
    Prep Time: 15 minutes minutes
    Cook Time: 55 minutes minutes
    Total Time: 1 hour hour 10 minutes minutes
    Servings: 6
    Calories: 405kcal
    Author: Kim Grabinski

    Ingredients
     

    • 1 pound ground pork or ground pizza sausage
    • 2 cups shredded mozzarella cheese
    • 6 large eggs
    • ⅛ teaspoon salt
    • ⅛ teaspoon pepper
    • ⅛ teaspoon Italian seasoning - optional

    Instructions

    • Preheat oven to 350 degrees Fahrenheit (177 degrees Celsius).
    • Brown sausage in a skillet.
    • Whisk together eggs, seasonings and shredded cheese.
    • Drain sausage and allow to cool.
    • Blend sausage and egg mixture and pour into a 9" pie pan.
    • Bake for 45-55 minutes or until firm.

    Notes

    Want your keto breakfast casserole to turn out as expected or even better while still having fun in the kitchen?
    • Don't be afraid to experiment. Get creative and add or remove ingredients to suit your preference. Don't like ground breakfast or Italian sausage? You can always use ground beef, turkey, or chicken. Don't like the taste of egg yolks? Just use the egg whites. Want to bake in muffin tins? By all means, go ahead.
    • The Italian seasoning is optional, but it gives this breakfast casserole keto a twist you'll love. I love its distinct flavor and use it on just about everything. It makes every bite full of flavor. That's why it's one of my go-to seasonings.
    • So I went all Italian on this recipe and used Italian sausage. But feel free to use pork breakfast sausage, turkey sausage, or whatever breakfast meat you want or have on hand.
    • Want to make it more fun? Make it with your little ones!

    Nutrition

    Serving: 1slice | Calories: 405kcal | Carbohydrates: 1g | Protein: 25g | Fat: 33g | Saturated Fat: 13g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 13g | Trans Fat: 1g | Cholesterol: 248mg | Sodium: 826mg | Potassium: 278mg | Fiber: 1g | Sugar: 1g | Vitamin A: 548IU | Vitamin C: 1mg | Calcium: 221mg | Iron: 2mg

    Reader Interactions

    Comments

      4.10 from 42 votes (34 ratings without comment)

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      Recipe Rating




    1. alexx366

      January 08, 2016 at 4:21 pm

      This isn t your typical hash brown filled, boring casserole, it s the low carb breakfast casserole that you ll get requests for seconds and raves from your pickiest eaters.

      Reply
    2. Gina

      February 27, 2016 at 7:12 pm

      Can you tell me what the fat and calorie count would be per serving?
      Sounds delicious!

      Reply
      • Kimberly Grabinski

        September 25, 2016 at 9:38 am

        If you use My Fitness Pal you can plug it in there, or there are other online nutrition calculators.

        Reply
    3. Lynn

      May 09, 2016 at 1:34 pm

      4 stars
      Tried this today and I really liked it..I take my low carb a step further and do not eat sugar so I make my own sausage and it was really good with it. The only thing I would do different is I think next time Im going to do a mozzarella/cheddar mix instead of all mozzarella. I omitted the italian seasoning and I'm glad I did. awesome recipe..thanks

      Reply
    4. sharon powell

      July 15, 2016 at 6:39 pm

      5 stars
      I come up with about 2 to 3 carbs per serving.

      Reply
    5. Brianna

      August 12, 2016 at 5:52 pm

      How much protein per serving?

      Reply
      • Kimberly Grabinski

        September 25, 2016 at 9:37 am

        You'll have to plug the recipe into My Fitness Pal or some other nutrition calculator, depending upon the actual ingredients you use, it may vary so I prefer people do their own calculations.

        Reply
    6. Niyah

      August 15, 2016 at 5:55 pm

      Can you freeze this?

      Reply
      • Kimberly Grabinski

        September 25, 2016 at 9:36 am

        I would think so!

        Reply
    7. Lana

      September 26, 2016 at 12:05 am

      For more low fat and heart healthy, I will substitute Egg Beaters. 😉

      Reply
    8. karen

      October 21, 2016 at 8:14 pm

      can you make ahead and reheat?

      Reply
    9. Kristina

      April 18, 2018 at 4:31 pm

      5 stars
      1 slice is 408 calories? Do I have that right?

      Reply
      • Kim

        April 19, 2018 at 5:32 am

        It's probably high, that's why I always recommend you double check it.

        Reply
        • Nita

          July 10, 2018 at 4:54 pm

          5 stars
          I always have left over for breakfast th next day. Just put it in th microwave for a minute. Delicious. One slice has 119 calories and 1 gm of carbs. .

          Reply
    10. Carol

      May 31, 2018 at 10:03 am

      What size pan to bake the casserole in

      Reply
      • Kim

        June 02, 2018 at 10:12 am

        9" pie pan!

        Reply
    11. Suzanne

      September 16, 2018 at 9:31 am

      Looks fantastic! Did I miss this - does it rewarm easily if we made it Sunday night and had it for breakfast for several days?

      Reply
      • Kim

        September 16, 2018 at 9:33 am

        Yes! I did this, it was amazing. I reheat it with a little butter on top. Yum!

        Reply
    12. Hayley

      April 02, 2019 at 6:44 pm

      Is the nutritional facts a rough estimate based on 1 slice?

      Reply
      • Kim

        April 05, 2019 at 9:58 am

        Hi Hayley, it's based on 1/6th of the casserole.

        Reply
    13. Patti

      November 18, 2019 at 9:11 pm

      If I only used a 1/2 pound of sausage, what quantity of fresh veggies would I use to make up the difference?

      Reply
      • 730 Sage Street

        November 19, 2019 at 4:44 pm

        Hi Patti, thanks sharing. In this case I think it would depend what your using and how. If I was to stretch this I think I'd simply include 1 large onion while browning the sausage.

        1/2 lb Sausage, 1 Large Onion and onion tends to work well with eggs and casseroles.

        Beyond that I would have to experiment with this, possibly broccoli, and maybe even bell peppers (red, yellow). These would certainly add a nice twist and give the dish a nice color/flavor boost.

        Of course let me know how it turns out!

        Reply
    14. Ivette

      December 14, 2021 at 7:28 am

      5 stars
      I made this recipe as written and it was excellent. I never thought of using Italian seasoning and only mozzarella. What a nice change and great recipe.

      Reply
    15. Sandy

      August 27, 2022 at 11:28 am

      5 stars
      Very good, simple ingredients and quick to assemble!

      Reply
    16. Dan Garza

      November 04, 2022 at 9:21 pm

      5 stars
      This is such a time saver! I sliced it and packaged it out for the week. I warm it up in the mornings, place it on Keto toast with avocado and goat's cheese and a sprinkle of Everything But The Bagel seasoning. The recipe is so very tasty.

      Reply
    17. Sheila Hutchinson

      March 14, 2023 at 6:05 pm

      If you cook that for 45 minutes it will probably burn on the bottom. If you use a castiron frying pan, you can do it all in one, get it faster and add a little iron to your diet.

      Reply
    18. Kim Bauer

      September 03, 2023 at 8:44 pm

      5 stars
      I’ve made this several times just as the recipe says. I would not change a thing! It’s so good. My whole family loves it!

      Reply

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    Kim @ 730 Sage Street

    Hi, I'm Kim!

    Creating easy recipes with everyday ingredients since 2008. I believe you can make quality homemade recipes even if you are short on time and budget-conscious. You just need to dive in and learn as you go!

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