Keto Brussels Sprouts Casserole

This Keto Brussels Sprouts Casserole is the ultimate cheesy comfort food. It’s loaded with tender Brussels sprouts, bacon, and loads of gooey cheese to bring a creamy flavor to each bite. Plus, the recipe is entirely low-carb, making it an excellent addition to any keto recipe binder!

Not only is this recipe incredibly filling, but it comes together quickly and easy. And honestly, who doesn’t love a bacon and cheese combo when they’re having a tough week? What makes this recipe even sweeter is the fact that the Brussels sprouts are baked and not boiled. So, they’re way tastier and have a glorious, crispy exterior that you’re going to love.

Although the bacon and cheese are stellar parts of this recipe, don’t underestimate the savory kick from the onion and garlic powder. They truly round out the sinfully creamy cheese sauce and pack a serious punch in the flavor department.

Why You’ll Love This Keto Brussels Sprouts Casserole

• It’s easy to make and super-cheesy – so, it’s easy to convince kiddos to give it a try!
• Adding bacon brings crispiness to the recipe that balances the smooth, creamy cheese sauce.
• The dish is ready in 30 minutes flat and requires virtually no prep time (perfect for last-minute gatherings!).
• It’s a great and creative way to work more veggies into your diet.

Ingredients

The full printable recipe card with measurements and instructions is found at the bottom of the post.

• Bacon: Crispy bacon bits or regular bacon will both work for this recipe. However, the crispy bacon bits are usually crunchier!
• Heavy cream: For a rich, creamy cheese sauce.
• Eggs: Bind the sauce together.
• Cheddar cheese: For a tangy, sharp flavor that beautifully coats the Brussels sprouts!
• Salt and pepper: To taste.
• Fresh rosemary: A sprig or two will bring an incredible, herby richness to your cheese sauce.
• Onion powder and garlic powder: Gives the sauce a savory base that’s utterly delicious.
• Paprika: For a subtle, smoky sweetness.

How to Make Keto Brussels Sprouts Casserole

• Step One: Preheat the oven to 400F.
• Step Two: Add the Brussels Sprouts to a large bowl and stir in the olive oil.
• Step Three: Season with salt and pepper and toss to cover the Brussels sprouts.
• Step Four: Spread the Brussels sprouts evenly on a baking sheet and roast for 20 minutes.
• Step Five: Remove the Brussels sprouts and sprinkle them with cooked bacon. Then, set them aside.
• Step Six: In a large bowl, stir together eggs, heavy cream, cheese, rosemary, onion powder, garlic powder, paprika, salt, and pepper.
• Step Seven: Place Brussels sprouts in a 9 x 13 casserole dish and pour the egg mixture on top.
• Step Eight: Bake the Brussels sprouts uncovered at 350 F for 20 minutes.
• Step Nine: Serve hot and enjoy!

Equipment Needed

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This is an incredibly simple recipe, but you still need to grab a few kitchen tools to make the magic happen. These tools are kitchen staples and will be useful for a great range of classic recipes!

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• 9 x 13 casserole dish
• Mixing bowls
• Baking sheet
• Cutting board

What to Serve with Keto Brussels Sprouts Casserole

Although you can enjoy this Keto Brussels Sprouts Casserole on its own, you might want to make it a side dish.

If you’re looking for a mighty main to pair this casserole with, these are some great ideas:

• Irish Potatoes
• Parmesan Thyme Roasted Potatoes

Recipe Tips and Tricks

• When you’re buying cheddar cheese for this recipe, I recommend buying a block of cheese and then grating it. This is because grated cheese tends to contain starch that makes it harder to melt!
• Make sure you fully coat the Brussels sprouts with bacon. Okay,I get that it’s tricky to coat the Brussels sprouts with bacon, but redistributing the bacon bits will make each portion more even.
• Check that the sprouts are spread evenly on the pan. If you don’t do this, they won’t brown well or some will be undercooked and some will be burned.
• If your cheese sauce is runny, don’t panic. Cheese sauce usually thickens as it bakes, because the sauce gradually absorbs into the sprouts. If it’s super wet, a small amount of cornstarch should thicken it up slightly.

Variations and Substitutions

You can use the air fryer to get crispier bacon. If you’re not using bacon bits, the air fryer is a fabulous way to crisp up your bacon before stirring it into the casserole!

Storage Instructions

This Keto Brussels Sprouts Casserole tastes best straight out of the oven. But you can technically store it covered in the fridge for up to 2 days.

Just remember to let it cool to room temperature before ceiling the casserole dish with foil and placing it in the fridge.

If you need to reheat it, you can either put it in the microwave or heat up the oven to get the cheese back to its glorious, melty texture.

Can I Freeze?

You can freeze this Keto Brussels Sprouts Casserole for 2-3 months in the freezer.

Simply move it to freezer-safe bags or containers once cooled and defrost in the fridge overnight. If you’re short on time, you can bake the leftovers straight from frozen!

Keto Recipes

I have a few other keto recipes you might like.

• Keto Zuppa Toscana 
• Keto Pumpkin Cheesecake 
• Keto Cauliflower Ziti 
• Low Carb Chicken Divan 
• Keto Butter Chicken with Noodles

Keto Resources

Check out these other keto diet resources:

• Keto Subscription Boxes for Canadians
• Keto Meal Planning Subscription (I bought this) Use the code SIMPLYSTACIE for 15% off.
• Natura Market (check out the keto section)
• Kiss My Keto
• Ketosis Breath Sensor

Even if you aren’t on the keto diet, you can still enjoy this recipe. If you try it, let me know how it turned out! 

You’ll also like this Roasted Brussels Sprouts with Cranberries and Bacon, Buffalo Popcorn and Brussel Sprouts with Lemon and Pancetta.

Follow me on Instagram @simplystacieblog, Facebook at Simply Stacie, TikTok @simplystacierecipes or Pinterest at @simplystacie and let me know how you liked this recipe and my other recipes.