NEW RECIPE VIDEO: Cauliflower Gratin

This is the exact scalloped potato recipe I make every Christmas for the extended fam, but modified to be low carb/NSNG with the substitution of cauliflower.





To be honest with you, making this dish with cauliflower is so much easier than making it with potatoes, and as such using cauliflower, it doesn’t have to be a holiday side dish. You can make it weeknights to go with any meat, preferably steak. The fam will think you’re a rockstar chef. It might have something to do with the copious amounts of cheese and cream.

Recipe notes:

  • Feel free to sub any cruciferous veg you want in this dish: Brussels sprouts or broccoli would be fab.
  • You can add chopped mushrooms for additional savory umami goodness.
  • You can sub your fave dairy free cheese and coconut cream to make this dairy free, it will still taste fantastic!
  • To mimic the look of scalloped potatoes, you are welcome to slice each cauliflower floret thinly on the verical and lay in the pan in a scalloped pattern. But I’ve found cauliflower to crumble apart easily, so feel free to just chop into pieces and proceed with the recipe accordingly.

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Cauliflower Gratin

Cuisine Keto, Low Carb, NSNG, Vegetarian


  • 1 large head cauliflower, chopped into 1” pieces (about 4 cups)
  • 1 medium sweet onion, chopped
  • Salt and pepper
  • 1 1/2 cups grated white cheddar cheese
  • 1 cup grated Swiss, Emmenthaler, or Gruyère cheese
  • 1 1/2 cups heavy cream
  • 1 tablespoon chopped parsley, for garnish


  • Preheat oven to 350 degrees. Lay cauliflower pieces and onion in a 9x12 baking dish, casserole pan, or Pyrex. Season well with salt and pepper. Toss in pan with grated cheddar and Swiss cheeses. Drizzle heavy cream over cauliflower mixture and bake, uncovered for 45 minutes, or until cauliflower is cooked through and cheese is bubbly and starting to turn golden brown. Remove from oven and let stand 10 minutes. Serve garnished with parsley.
Keyword celiac, christmas, gluten free, holiday, keto, low carb, nsng, sugar free, thanksgiving
Tried this recipe?Let us know how it was!



  • Looks super yummy. Will definitely making this for Christmas

    I’m not a pumpkin cheesecake fan, how can I modify to regular cheesecake

    • Use the Cheesecake Tart recipe in the first Eat Happy for a more traditional no-bake cheesecake.

    • It is F-ing delicious, as you said. Just made it with fried porkchops and put it on top. Can’t wait for leftovers tomorrow.

  • Made the cauliflower gratin recipe and served with ribs ( . I used Gruyere and white cheddar cheeses and added some chopped mushrooms. Very easy to make and extremely tasty! Will definitely be making again.

  • Rachel / Reply

    I made this a few times and .y mom.asked me to add bacon the next time I make it.
    I think the Greece from the bacon would mess with the cheesyness to much so I left it out.

  • Heidi Wrobel / Reply

    Our mistake was not waiting the 10 minutes after cooking. While we did not follow that last part, because we were hungry, the gratin was easy and delish!

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