Keto Cauliflower Mac and Cheese – The No. 1 Recipe!

  • Date: September 27, 2021
  • Time to read: 4 min.

Delicious and creamy keto cauliflower mac and cheese; the ultimate comfort food! Perfect as a starter, side, or main dish and definitely on par with the real thing. This quick and easy keto mac and cheese will be your keto salvation – a go-to dish for any occasion. TRY IT NOW!

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What’s Your Secret Sauce?

The secret to good keto cauliflower mac and cheese? It’s definitely in the sauce!

This is a really simple sauce using cheddar and mozzarella.

Why? Mainly because the two are always in my fridge.

Why not use the base ingredients below and mix it up with different cheeses. Let me know what works for your keto mac and cheese in the comments below so I can try.

Post-Christmas I made this will a mixture of the cheeses leftover from Christmas Day – all of them – I can safely say …it was disgusting,

Your tastes may be different from mine – but a combination of blue cheese and smoked cheese was not so good.

Safe to say after the first bite the rest went in the bin, which is amazing as I never waste food.

If you are new to keto, check out our Keto For Beginners guide.

The Truth About Cauliflower?

Can you handle the truth?!

I use to hate cauliflower if it was pretending to be anything other than its self. Pizza bases, rice, and even pasta – eugh!

It just did not do it for me.

However, since eating keto I soon accepted that I would have to experiment with foods until I found substitutes that would allow for a sustainable way of eating. 

Cauliflower is great as it is low in carbs, so can easily fit within your macros without kicking you out of ketosis.

Cauliflower contains only 3 grams of net carbs per 100 grams, making it perfect for a keto diet, its also full of health benefits.

Keto cauliflower mac and cheese was one of the first substitutes I found, and I didn’t feel like I was missing out on carbs in any way!

Then I knew keto was the lifestyle for me.  The best bit is that this keto mac and cheese can be cooked with cupboard ingredients including frozen cauliflower.

Keto Cauliflower Mac and Cheese was one of the first substitutes I found, and I didn’t feel like I was missing out on carbs in any way! Then I knew keto was the lifestyle for me.

Cooking Keto Mac and Cheese: Top Tips!

Firstly, don’t overcook the cauliflower – nobody likes mushy cauliflower.

Cauliflower can be boiled on the hob or in the microwave.

Just remember if the florets are larger it will take them longer to cook.

A simple way to test if they are cooked right use a sharp knife and try and pierce the thickest bit on the florets.

If it’s cooked, the knife should go through without too much resistance – at this point they are perfect!

In order to brown and crisp up the top of your keto mac and cheese, place it under the grill on medium heat.

Although if your oven is already on for other bits you can cook it in the oven.

I like the top of my keto mac and cheese nicely browned and crispy. In order to get mine really crispy, I keep turning the mac and cheese with a fork every 2-3 minutes to make sure there are crispy bits of cheese throughout.

Don’t just, trust me, give it a go – you won’t go back!

Keto Cauliflower Mac & Cheese Seasoned to Perfection

Feel free to play around with the seasoning you use. Salt & pepper, nutmeg, parsley, curry flavors, the list goes on. I’ve purposely kept this recipe neutral in case you’re just finding your way on keto or have simple tastes.

There’s nothing worse than trying something and not liking it and therefore yourself off the food for life. Like I’ve said before, cauliflower can become one of your best friends on keto, so start simple and build!

Personally, I like to add a little smoked paprika. I stir it into my sauce and then I sprinkle a bit extra onto the top before I grill it. Paprika gives this mac & cheese a lovely color too. I’ve never been a fan of the really pale mac and cheese you get in tins.

Check out this Keto Mac and Cheese here;

Keto Mac and Cheese

Course: Sides, mains, VegetarianDifficulty: Easy


Prep time


Cooking time


Total time



Beautifully cheesy keto mac and cheese


  • 35g butter

  • 1 medium head cauliflower, chopped into florets

  • 210ml almond milk

  • 1/2 teaspoon mustard powder

  • 1/4 teaspoon xanthan gum

  • 210g cheddar, grated

  • 1/4 teaspoon nutmeg (optional depending on your preference)

  • 1/4 teaspoon Himalayan salt

  • 140g mozzarella

  • Salt and pepper, to taste


  • Add cauliflower florets into a pot with boiling water with the Himalayan salt and cook for 5-7 minutes until tender – strain and set to one side.
  • Add butter in a saucepan over medium heat, and when melted, add xanthan gum and cook for about 1-2 minutes.
  • Pour milk into the saucepan and then whisk well to combine. Then season well with salt, pepper, and mustard powder (if you want nutmeg too now’s the time to add it).
  • Simmer for about 5 minutes until slightly thickened, and then turn the heat off.
  • Stir in most of the cheese (mozzarella & cheddar) until they are fully melted, and then add the cauliflower into the pan. Stir well until the cauliflower is completely coated in the cheese sauce.
  • Turn the contents out into an oven-proof dish, Add the rest of the cheese to the top.
  • Place under the grill at 100C for around 7 mins until the top is golden and crispy – leave for longer if you like it a bit darker OR if you have the oven on for another dish you can always bake this in the oven for a further 20 minute.
  • Use chives to garnish. Serve and enjoy!

Top tips

  • Have a play around with your spices for different flavors, that way you will never get bored of this dish.

If you enjoyed this recipe, why not try out Keto Buttery Cauliflower Mash?

Or, if you are looking for other keto substitutions, check out our Keto-Friendly Alternatives to Potato Guide.

In the meantime, enjoy your keto mac and cheese!

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