Sunday Roasted Cauliflower Gratin

Name: Sunday Roasted Cauliflower Gratin
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Yield: 4 servings
Ingredients: 1 large head of cauliflower, cut into florets; 2 cups heavy cream; 1 cup grated Gruyère cheese; 1 cup grated Parmesan cheese; 1/2 cup breadcrumbs; 2 tablespoons butter; 2 cloves garlic, minced; 1/4 teaspoon nutmeg; Salt and pepper to taste; Fresh parsley for garnish

Highlighted under: Comfort Favorites

I absolutely adore this Sunday Roasted Cauliflower Gratin! It's one of those dishes that transforms a humble vegetable into something incredibly sumptuous. Every bite is a delightful combination of nutty flavor from the roasted cauliflower and a rich, creamy sauce that elevates it to a new level. Perfect for family gatherings or as a special treat during the week, this gratin is a comforting choice that never fails to impress at the dinner table.

Created by

Elodie Fairfax

Last updated on 2026-01-11T19:43:35.542Z

When I first made this dish, it was for a gathering of friends who were skeptical about cauliflower. I decided to prove its versatility and flavor potential. The key was roasting the cauliflower first; this step caramelizes the natural sugars in the vegetable, adding depth to the overall dish.

As I mixed the creamy cheese sauce, I added a hint of nutmeg which beautifully complements the cauliflower and enriches the gratin experience. A sprinkle of crisp breadcrumbs on top creates a satisfying crunch that my guests couldn't resist. This recipe turned even the biggest cauliflower naysayers into fans!

        Reasons You'll Love This Recipe
        Creamy cheesy goodness that meets a hearty veggie
Nutty flavor from roasted cauliflower adds depth
Perfectly crispy topping contrasts with the creamy interior

      

Mastering the Cauliflower

Choosing the right cauliflower is key for this dish. Look for a large head with tightly packed florets and crisp leaves. This ensures optimal flavor and texture once roasted. If you encounter any browning or soft spots, opt for another head to avoid a soggy gratin. Don't forget to wash and thoroughly dry the florets before roasting; excess moisture can lead to steaming rather than roasting, preventing that rich, nutty flavor you're aiming for.

When roasting, keep an eye on the cauliflower towards the end of the cooking time. You want it to develop a beautiful golden color and a slight crispness on the edges. If you find that it's not browning enough, consider increasing your oven temperature slightly or giving it a few extra minutes, but be cautious to avoid burning those delicate florets.

Perfecting the Cheese Sauce

The cheese sauce is the heart of this gratin. To achieve that velvety texture, whisk the cheese into the cream gradually, allowing it to melt completely to avoid clumping. Gruyère offers a distinctive nutty flavor, while Parmesan contributes saltiness and depth. If you're short on either cheese, feel free to mix in some sharp cheddar or fontina for a different twist, but remember that the textures may vary slightly.

Incorporating nutmeg into the sauce adds warmth and enhances the creaminess of the dish. It’s a classic pairing that can elevate the flavors beautifully. Just a pinch is enough; too much can overpower the other elements. If you find yourself without nutmeg, a dash of ground mustard or even a hint of cayenne can provide an interesting kick.

Ingredients

Gather the following ingredients before starting:

Ingredients

1 large head of cauliflower, cut into florets
2 cups heavy cream
1 cup grated Gruyère cheese
1 cup grated Parmesan cheese
1/2 cup breadcrumbs
2 tablespoons butter
2 cloves garlic, minced
1/4 teaspoon nutmeg
Salt and pepper to taste
Fresh parsley for garnish

Make sure to prepare the ingredients properly for the best results.

Instructions

Follow these steps to create your delicious gratin:

Roast the Cauliflower

Preheat your oven to 425°F (220°C). Spread the cauliflower florets on a baking sheet, drizzle with olive oil, and season with salt and pepper. Roast for 25-30 minutes until golden and tender.

Prepare the Cheese Sauce

In a saucepan, melt butter over medium heat. Add minced garlic and sauté for 1 minute. Stir in heavy cream, bring to a simmer. Whisk in Gruyère and Parmesan until melted. Add nutmeg, salt, and pepper.

Combine and Bake

Lay the roasted cauliflower in a baking dish, pouring the cheese sauce over the top. Sprinkle breadcrumbs evenly and add a little more cheese if desired. Bake in the oven for 15 minutes or until bubbling and golden.

Garnish and Serve

Remove from the oven and let it sit for a few minutes. Garnish with fresh parsley before serving. Enjoy your hearty and creamy gratin!

This gratin is best served warm, fresh from the oven.

Pro Tips

Make sure to roast the cauliflower well for deep flavor. You can substitute the cheese types based on your preference. Adding a pinch of smoked paprika can also enhance the flavor.

Make-Ahead Tips

This gratin can be prepared in advance, making it an ideal option for busy weeknights or special gatherings. You can roast the cauliflower and prepare the cheese sauce a day ahead. Simply store them separately in airtight containers in the fridge. When you're ready to serve, combine them in the baking dish, add breadcrumbs, and pop it in the oven. Just be prepared for a slightly longer baking time as you’ll need to heat everything through.

If you anticipate leftovers, consider making a larger batch and freezing some portions. Allow the gratin to cool completely before portioning it into freezer-safe containers. When you want to enjoy it again, thaw in the refrigerator overnight before reheating in a 350°F (175°C) oven until warmed through and crispy on top, around 25-30 minutes.

Serving Suggestions

This Sunday Roasted Cauliflower Gratin pairs wonderfully with a variety of main dishes. It’s particularly delicious alongside a simple roasted chicken or a hearty beef roast. The creaminess and nutty flavor of the gratin balance beautifully with savory meats. Additionally, a bright green salad or lightly steamed green beans can add freshness to your meal.

For a vegetarian twist, serve the gratin as a standout dish during a meatless meal. It makes a great center dish on a dinner table, complemented by a side of roasted or sautéed seasonal vegetables. Don’t hesitate to garnish with a sprinkle of chili flakes for an unexpected pop or add a drizzle of balsamic reduction for a touch of sweetness that contrasts beautifully with the creamy sauce.

Questions About Recipes

→ Can I use other vegetables?

Yes! Broccoli or Brussels sprouts work well in this recipe.

→ Can I make this ahead of time?

Absolutely! You can prepare the gratin in advance, store it in the fridge, and bake it just before serving.

→ Is there a way to make this recipe lighter?

You could use a lower-fat cream or substitute with milk mixed with a little cornstarch for thickness.

→ How long can leftovers last?

Leftovers can be stored in an airtight container in the refrigerator for up to 3 days.