Cheesy Cauliflower Gratin Bake

Featured in: Home Comforts

Tender cauliflower florets are combined with a creamy blend of Gruyère, cheddar, and Parmesan cheeses, then baked until bubbling and golden. This French-inspired gratin offers a delectable low-carb, gluten-free twist on classic potato side dishes. A touch of nutmeg and optional almond flour provide extra flavor and crunch, while simple preparation makes it ideal for easy weeknight meals. Pair with roasted meats or grilled chicken for a complete comfort food experience.

Updated on Fri, 17 Oct 2025 10:24:20 GMT
Creamy, bubbling Cheesy Cauliflower Gratin: tender cauliflower in a rich cheese sauce, baked golden brown. Save
Creamy, bubbling Cheesy Cauliflower Gratin: tender cauliflower in a rich cheese sauce, baked golden brown. | snacksplat.com

This cheesy cauliflower gratin is pure comfort food with a French twist You get the full indulgence of a bubbling golden gratin but with cauliflower as your star so it is lighter yet just as decadent as any potato bake I find myself making this every holiday but honestly there is never a wrong time and it disappears fast at family dinners

I was hunting for a delicious side when my youngest went low carb and this gratin hit every mark We now joke that it is the reason anyone eats their vegetables at all

Ingredients

  • Cauliflower florets: add heartiness and soak up creamy sauce go for firm white heads with tight buds
  • Unsalted butter: gives the sauce silkiness use European style for extra richness if you can find it
  • Heavy cream: creates the luxurious texture avoid ultra pasteurized for the freshest flavor
  • Gruyère cheese: brings nuttiness and melt appeal Swiss cheese can fill in as needed
  • Cheddar cheese: offers sharp tang and color always shred fresh for smoother melting
  • Parmesan cheese: tops with extra umami freshly grated is more flavorful than pre shredded
  • Garlic powder and onion powder: boost depth and stick to the veggies evenly
  • Ground nutmeg: lifts the cheese sauce and is classic in French gratin just a pinch is plenty
  • Salt and black pepper: balance and round out every bite taste and season as you go
  • Almond flour: makes a golden crunchy topping optional for texture skip if you have nut allergies

Instructions

Prep the oven and dish:
Begin by heating the oven to four hundred degrees Fahrenheit equal to two hundred Celsius and generously butter a medium baking dish For best results pick one that is not too large so the gratin has some height
Parboil the cauliflower:
Fill a large pot with salted water and bring it to a rolling boil Add cauliflower florets and cook for about five minutes just until they are fork tender but not falling apart Drain them thoroughly in a colander and set aside letting extra steam escape
Make the cheese sauce:
Place a saucepan over medium heat and melt the unsalted butter Pour in the heavy cream and stir in garlic powder onion powder nutmeg salt and black pepper Heat everything together until it starts to gently bubble which takes two to three minutes
Melt in the cheeses:
Gradually add the Gruyère and cheddar cheese into your hot cream mixture Always stir continuously with a whisk until it is smooth thick and all the cheese has fully melted If the sauce looks lumpy turn the heat to low and keep stirring until creamy
Combine cauliflower and sauce:
Add the well drained cauliflower florets straight into the cheese sauce Use a spatula to gently fold everything together so each piece is coated without breaking up the veg too much
Assemble the gratin:
Scrape the cheesy cauliflower mixture into your buttered dish Level it out with your spatula then sprinkle Parmesan cheese evenly over the top For added crunch scatter over the almond flour in a light even layer
Bake to golden perfection:
Slide the dish into your preheated oven Bake for twenty to twenty five minutes until the sauce is bubbling around the edges and the top is crisp and deep golden brown If you love extra browning turn on the broiler for one to two minutes but watch closely
Rest and serve:
Once baked remove the gratin and let it rest for about five minutes The sauce will thicken slightly in this time making slicing and serving easier Enjoy it piping hot
Close-up of Cheesy Cauliflower Gratin, showing the golden, crispy topping and creamy sauce. Save
Close-up of Cheesy Cauliflower Gratin, showing the golden, crispy topping and creamy sauce. | snacksplat.com

My favorite part of this recipe is the combination of Gruyère and a hint of nutmeg The resulting aroma always reminds me of my grandmother's holiday tables where gratins meant celebration My kids now look forward to fighting over that crispy golden corner piece every time

Storage Tips

Store cooled leftovers in an airtight container in your fridge It will keep well for up to three days For best reheating warm it gently in the oven covered with foil to retain moisture Microwaving works in a pinch but the topping may lose its crispness

Ingredient Substitutions

If you cannot find Gruyère try Emmental or regular Swiss cheese Cheddar adds a nice sharpness but you can swap it for Monterey Jack or even use all Gruyère for a more classic French taste To make the gratin nut free leave out the almond flour topping entirely For an even lower carb version cut the cream just a bit and replace some cauliflower with broccoli florets

Serving Suggestions

This dish is a match made for roast chicken or beef and makes any holiday meal a little more special For vegetarians it is hearty enough to stand on its own with a simple green salad Leftovers reheat beautifully and also make a luxe breakfast alongside poached eggs

Cultural Context

Cauliflower gratin is a French classic known as gratin de chou fleur The method of baking vegetables in a creamy sauce topped with cheese dates back to classic French kitchens swapping in whatever veg were in season or, in leaner times, whatever was available I love it because it turns humble cauliflower into something that feels festive and a bit luxurious

Seasonal Adaptations

In spring try mixing in a handful of blanched asparagus or peas For autumn toss in thin slices of sautéed mushrooms On especially cold days I sometimes stir in a spoonful of grainy mustard for an extra pop of flavor

Homemade Cheesy Cauliflower Gratin, a comforting low-carb side dish ready to be served. Save
Homemade Cheesy Cauliflower Gratin, a comforting low-carb side dish ready to be served. | snacksplat.com

Goes from side dish to vegetarian entrée in minutes Crowd friendly and easy to double for a bigger gathering Reheats well for lunchboxes or next day brunch

Recipe Guide

Can I make this gratin nut-free?

Yes. Simply omit the almond flour topping for a nut-free version while retaining its delicious texture.

What cheeses work best for this dish?

Gruyère and cheddar bring flavor and creaminess; Swiss or Emmental cheese are great substitutes if needed.

Is this suitable for gluten-free diets?

Yes, all main ingredients are gluten-free. Check packaging for any allergen warnings to be sure.

Can I prepare it ahead of time?

You can assemble the gratin beforehand and bake just before serving. Reheat leftovers in the oven for best texture.

What can I serve with this gratin?

It pairs beautifully with roasted meats, grilled chicken, or other hearty main courses.

Is it vegetarian-friendly?

Yes. All listed ingredients are vegetarian. Check cheese labels for animal rennet if strict vegetarian.

Cheesy Cauliflower Gratin Bake

Cauliflower florets baked in a creamy, cheesy sauce with golden topping. Easy, comforting, and low-carb.

Prep duration
15 min
Kitchen time
30 min
Complete duration
45 min
Created by Katie Miller


Skill level Easy

Heritage French

Output 4 Portions

Nutrition Labels Meat-free, No gluten, Carb-conscious

What you'll need

Vegetables

01 1 large head cauliflower (about 28 oz), cut into florets

Dairy

01 2 tablespoons unsalted butter
02 1 cup heavy cream
03 1 cup grated Gruyère cheese
04 1 cup grated cheddar cheese
05 1/4 cup grated Parmesan cheese

Seasonings

01 1/2 teaspoon garlic powder
02 1/2 teaspoon onion powder
03 1/4 teaspoon ground nutmeg
04 Salt and black pepper, to taste

Topping

01 2 tablespoons almond flour (optional, for crunch)

Method

Step 01

Prepare Baking Dish: Preheat oven to 400°F. Lightly butter a medium-sized baking dish.

Step 02

Blanch Cauliflower: Bring a large pot of salted water to a boil. Add cauliflower florets and cook for 5 minutes until just tender. Drain thoroughly using a colander and set aside.

Step 03

Make Cheese Sauce: In a saucepan over medium heat, melt butter. Pour in heavy cream, add garlic powder, onion powder, nutmeg, and season with salt and black pepper. Bring the mixture to a gentle simmer, then stir in Gruyère and cheddar cheese. Whisk until sauce is smooth and thickened.

Step 04

Combine Cauliflower and Sauce: Add the drained cauliflower florets to the saucepan and gently toss to coat completely with the cheese sauce.

Step 05

Assemble and Top: Transfer the coated cauliflower mixture to the prepared baking dish. Evenly sprinkle Parmesan cheese and almond flour over the top.

Step 06

Bake: Place the dish in the oven and bake for 20 to 25 minutes until the gratin is bubbly and golden brown on top.

Step 07

Rest and Serve: Allow the dish to rest for 5 minutes before serving.

Kitchen tools

  • Large pot
  • Saucepan
  • Baking dish
  • Colander
  • Whisk

Allergy details

Always review ingredients for potential allergens and seek professional medical guidance if uncertain.
  • Contains milk, cheese, butter, and tree nuts (almond flour, optional).
  • Check dairy products for possible traces of gluten or other allergens if necessary.

Nutrient breakdown (each portion)

Numbers shown are estimates only - please consult healthcare providers for specific advice.
  • Energy: 320
  • Fats: 26 g
  • Carbohydrates: 8 g
  • Proteins: 13 g