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Easy Cheesy Keto Brussel Sprouts Casserole

This Easy Cheesy Keto Brussel Sprouts Casserole is a flavorful dish for dinner and a perfect keto breakfast idea. Fully Low Carb, Gluten-Free, Grain-Free, and Diabetic Friendly, this tasty keto casserole together with tender brussel sprouts have become a favorite meal with our kids as well. 

Brussel Sprouts Oven Gratin
Cheesy Brussel Sprouts Keto

Recipes with Brussel Sprouts

Our Brussel Sprouts casserole recipe is, to my surprise, becoming the favorite of all in the family. Even my daughter, who did not like brussels sprouts, is now a big fan.

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Together with our Bacon Brussel Sprouts Cups, this low-carb vegetable is almost all the time in the fridge, ready to be transformed into one of the brussel sprouts recipes. 

Keto Casseroles

Casseroles are the easiest ways to prepare dinner when you have a big family and need quick, easy, tasty, and good looking. 

I usually alternate between Cheesy Cabbage Casserole, Asparagus Keto Quiche, Lasagna with Ground Beef, as that is also a casserole dish, and our Brussel Sprouts Recipe. 

I sometimes pick from a Collection of over 37 Low Carb and Keto Casserole Recipes and alternate depending on what is available in the fridge. 

Valentines Brussel Sprouts Gratin

If you type into a google search “Valentines” what do you think comes?

Lots and lots of deserts recipes. And do not get me wrong. I love them. But there are times when you just crave something a bit on a savory site and it could just happen to be on a Valentine day.

Although as a Breakfast option somebody could appreciate this much more. Those little beauties are not very much used in our house, but because of the unbelievable amount of vitamin C and K as well as essentials minerals, We try to include them once a while. Hope you will enjoy it.

Easy Cheesy Low Carb Brussels Sprouts Gratin
Valentine Brussel Sprouts

How do you make a Keto Casserole?

Casseroles are easy to make as all you have to do is add some layers of protein, low-carb vegetables, lots of cheese, and some kind of sauce. It is baked in the oven, and it always looks extra delicious and super cheesy. 

Brussel Sprouts

Do you like brussel sprouts? 

I never did. 

Neither did my family. 

I had never actually made brussel sprouts until we started our low-carb lifestyle. 

I guess I never knew exactly what to do with them and how to prepare them properly. 

Keto Brussel Sprouts Casserole made in a cast iron
Easy Cheesy Keto Brussel Sprouts Casserole
What are Brussel Sprouts?

Brussels Sprout is one of the few vegetables that grow even when your garden is covered with snow. 

Those tiny buds of mini cabbages grow on tall stalks, and you can get approximately 60 to 80 spouts from one single branch. 

They have a pretty long shelf life in the refrigerator and are very popular, especially in autumn and winter. 

How do you clean brussel sprouts?

To clean Brussel Sprouts is super easy. You have to cut the end of the bud and peel one layer of the leaves. Wash them under warm water, and you are ready to prepare.

How do you get rid of the bitterness of Brussels sprouts?

To get rid of the bitterness of Brussels sprouts is to simply cook or bake them. 

Blanched Brussel Sprouts help dearly as well.

How do you make Brussel sprouts tender?

Brussels sprouts become perfectly tender by blanching them for a quick 5 minutes and immediately immersing them into the iced water to retain the beautiful green color. 

You should blanch Brussels sprouts even before roasting them to retain their tenderness and crispiness. 

How do you freeze fresh Brussel Sprouts?

You should blanch your brussel sprouts for about 5 minutes before freezing them. 

Once blanched, place them immediately into iced water and they are ready to be stored in your freezer or continue with one of the recipes. 

It is not advised to freeze your brussel sprouts without blanching them as they will become very dull, and they might change the color into brown and not good-looking. 

Are Brussel Sprouts Keto?

Brussel Sprouts are among the top low carb and keto vegetables to use in our lifestyle. 

They are also a great addition to our lifestyle because of their Low Glycemic Index.

With 86% water content and almost zero fat with a minimal amount of carbohydrates, they are on top of the vegetables used. 

Low Carb Brussels Casserole on a plate
Low Carb Brussels Casserole

Brussel Sprouts Carb

As already mentioned, brussel sprouts keto has minimal carbohydrates intake. 

The whole cup filled with brussel sprouts, which is approximately 90 grams, contains only 8 grams of carbohydrates. 

Au Gratin Brussel Sprouts

As our recipe requires twice baking with getting the best crust from additional cheese, I believe this recipe can be considered as well as brussel sprouts gratin. 

It has a perfect crust once baked for the second time, and nobody can refuse its deliciousness. 

How do you make Easy Cheesy Keto Brussels Sprouts Casserole?

Low Carb Brussels Casserole middle cut
Keto Brussel Sprouts Casserole

Kitchen Gadgets needed:

  • Cooking pot
  • Mixing Bowl
  • Whisk
  • Casserole dish

Ingredients needed:

  • Brussel Sprouts
  • Eggs
  • Sour Cream
  • Grated Cheese
  • Salt & Pepper

*Exact measurements are listed in the recipe card below.

STEP BY STEP INSTRUCTIONS FOR BEST CHEESY KETO BRUSSEL SPROUTS AU GRATIN 

First Step: Prepare ingredients for Brussel Sprouts Casserole.

Prepare all of your ingredients for the keto casserole.

At the same time, preheat your oven to 200 Celsius or 390 Fahrenheit.

Make sure you buy a block of hard cheese and grated at home as most of the store-bought grated cheese contains additional starches with lots of carbohydrates.

Low Carb Brussels Casserole ingredients needed
Easy Cheesy Keto Brussel Sprouts Casserole

Second Step: Clean and Blanch your Brussel Sprouts

Clean your brussels sprouts by cutting the end of the buts and peeling the outer layer of the leaves. Wash and place into the boiling pot of water for approximately five minutes.

This blanching will soften them slightly and retain the beautiful green color while baking. 

After five minutes, quickly place them into the ice-cold water for the color to remain. For more precise steps, you can check our video attached.

Blanched Brussel Sprouts ready for iced water
Low Carb Brussels Casserole

Third Step: Whisk eggs and add salt and pepper

In the meantime, add eggs into a mixing bowl and whisk them properly. 

At the same time, add salt and pepper.

Recipe with Brussel Sprouts whisking eggs
Brussel Sprouts Gratin

Fourth Step: Add Sour Cream and whisk

Once your eggs are whisked, continue adding sour cream and mix thoroughly.

Brussel Sprouts Recipe adding sour cream in
Recipe with Brussel Sprouts

Fifth Step: Add Grated Cheese and whisk

As the last ingredient, add your grated cheese and ensure the whole mixture is smooth.

Au Gratin Brussel Sprouts whisking grated cheese in
Brussel Sprouts Recipe

Sixth Step: Spread Brussel Sprouts onto the Casserole dish

Depending on the size of your casserole dish, spread the brussels sprouts evenly around.

Brussel Sprouts Keto spreading around the casserole
Au Gratin Brussel Sprouts

Seventh Step: Pour mixture and bake.

Gently pour the mixture onto the brussels sprouts covering them all.

Place into the oven and bake for approximately 20 minutes.

Keto Brussel Sprouts Casserole poured mixture over the casserole
Brussel Sprouts Keto

Eighth Step: Add extra Grated Cheese and bake

After your Keto casserole has been baked, take it out of the oven. 

Spread the rest of the grated cheese on top.

Place again into the oven and bake for 10 minutes until the cheese becomes golden brown.

Brussel Sprouts Gratin adding last grated cheese for baking
Keto Brussel Sprouts Casserole

Ninth Step: Enjoy

You can enjoy this Brussell sprouts casserole immediately or store it in your fridge for later.

Easy Cheesy Keto Brussel Sprouts Casserole redy to enjoy
Brussel Sprouts Gratin

Tips and Tricks:

  • Blanching – for your brussels sprouts to retain beautiful green color, you have to blanch them before baking
  • Grated Cheese – make sure you grate your cheese at home as store-bought contains additional starches
  • Type of Cheese – any hard cheese such as Edam, Parmesan, Cheddar, Emmental works
  • Sour Cream – can be replaced with Heavy Cream
  • Additional spices – you can add onion powder or garlic powder for different flavors

FREQUENTLY ASKED QUESTIONS AND ANSWERS

How to store Brussel Sprouts Casserole?

You can store the brussels sprouts casserole in your refrigerator for up to 3 to 4 days. 

Anything longer, I suggest freezing it.

Can you freeze Keto Casserole?

You can, without a problem, freeze any of the keto casseroles. That’s what I do with most of the leftover dishes.

Place them into the glass container, best pre-portioned for easier meal preparation.

Take your portion out of the freezer the night before and let it thaw naturally in the fridge.

If needed, warm it up in the oven for 5 to 10 minutes.

Pin For Later:

Easy Cheesy Keto Brussel Sprouts Casserole
Keto Brussel Sprouts Casserole

One of the great recipe similar to ours is Brussels Sprouts au Gratin with Bacon or Keto Broccoli & Cauliflower Bake. Worth trying.

Do not forget to check our Cheesy Low Carb Brussels Sprouts Story for a quick reference.

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Yield: 6

Easy Cheesy Keto Brussel Sprouts Casserole

Brussel Sprouts Oven Gratin

This Easy Cheesy Keto Brussel Sprouts Casserole is a flavorful dish for dinner and a perfect keto breakfast idea. Fully Low Carb, Gluten-Free, Grain-Free, and Diabetic Friendly, this tasty keto casserole together with tender brussel sprouts have become a favorite meal with our kids as well. 

Prep Time 10 minutes
Cook Time 40 minutes
Total Time 50 minutes

Ingredients

Instructions

  1. Preheat oven to 200 Celsius or 390 Fahrenheit
  2. Clean your brussels sprouts by cutting the end of the buts and peeling the outer layer of the leaves. Wash and place into the boiling pot of water for approximately five minutes and immediately place them into the iced water.
  3. In the meantime, add eggs into a mixing bowl and whisk them properly. At the same time, add salt and pepper.
  4. Once your eggs are whisked, continue adding sour cream and mix thoroughly
  5. As the last ingredient, add your grated cheese and ensure the whole mixture is smooth.
  6. Depending on the size of your casserole dish, spread the brussels sprouts evenly around.
  7. Gently pour the mixture onto the brussels sprouts covering them all.
  8. Place into the oven and bake for approximately 20 minutes.
  9. After your Keto casserole has been baked, take it out of the oven. Spread the rest of the grated cheese on top.
  10. Place again into the oven and bake for 10 minutes until the cheese becomes golden brown.

Notes

  • Blanching - for your brussels sprouts to retain beautiful green color, you have to blanch them before baking
  • Grated Cheese - make sure you grate your cheese at home as store-bought contains additional starches
  • Type of Cheese - any hard cheese such as Edam, Parmesan, Cheddar, Emmental works
  • Sour Cream - can be replaced with Heavy Cream
  • Additional spices - you can add onion powder or garlic powder for different flavors

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Nutrition Information

Yield

6

Serving Size

1

Amount Per Serving Calories 258Total Fat 20gCarbohydrates 5gProtein 14g

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Last Updated: January 20, 2022

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Cheesy Brussels Sprouts

Sarah

Friday 5th of June 2020

Brussels Sprouts seem to be one of those things you either love or hate. I don't like them much compared to other veggies. I do like this recipe though. Also I don't like to cook much, but bis is really easy to make.

I also used diced bacon bits for some more meat. And used the sauce and cheese with other frozen veggies. Heat up the veggies for 2-4 min. in the micro (or pot on a stove, if you prefer). Don't cook the veggies too hot, just heat them up enough so they're not stone hard frozen anymore. They'll be cooking more in the oven later anyway. While waiting for the veggies in the micro I prepared the sauce and put it all together like that. Yesterday I wanted even more than diced bacon bits and had to use up some ground beef. So I heated that up in a pan, heated up some mixed frozen veggies in the micro, put the veggies in the baking form, added the well cooked ground beef (use a spoon or something, if you want to mix up the veggies and beef more or don't, if you want layers).

If I'm lazy and want some veggies, this is my go to now. As suggested above, variations of veggies are possible and basically endless. Thanks a lot for posting this!

Zuzana

Friday 5th of June 2020

Dear Sarah. I am so happy you love the recipe. Your suggestions are great and I do hope our readers will try it.

Have a great day

Zuzana

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