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 tablespoons olive oil; Salt and pepper to taste; 2 cups shredded cheese (Gruyère or cheddar work great); 1 cup heavy cream; 1/2 cup milk; 2 cloves garlic, minced; 1/4 teaspoon nutmeg (optional); 1/2 cup breadcrumbs; 2 tablespoons unsalted butter, melted

Highlighted under: Baking & Desserts

I absolutely adore the comforting embrace of a warm, cheesy gratin on a Sunday evening, and this Sunday Roasted Cauliflower Gratin never disappoints. Combining tender cauliflower with a rich, creamy cheese sauce and a golden, crunchy topping, this dish has become a staple at my family dinners. What makes it even better is how straightforward it is to prepare, allowing me to spend more time catching up with loved ones while enjoying a delicious, homemade meal at the same time.

Created by

Riley Dawson

Last updated on 2026-01-13T03:46:13.907Z

Cooking this Sunday Roasted Cauliflower Gratin has become one of my favorite traditions. I love how the layers of flavor come together, creating a dish that is both comforting and elegant. Each time I roast the cauliflower, I get a little more creative, sometimes adding a hint of nutmeg or even a sprinkle of smoked paprika to give it an extra kick.

What I’ve learned is that the key to achieving that amazing texture is to roast the cauliflower until just tender before combining it with the sauce. This not only infuses the flavors but also prevents the gratin from becoming too watery. I can’t wait for you to try it!

        Why You'll Love This Recipe
        Decadently creamy and cheesy, perfect for a weekend treat
The crunchy topping adds an irresistible texture
A great way to enjoy vegetables without sacrificing flavor

      

Mastering the Cheese Sauce

The cheese sauce is the heart of this gratin, and achieving the perfect consistency is key. When warming the heavy cream and milk, be careful not to let it boil; a gentle simmer is ideal for integrating the flavors. Stir the mixture continuously to prevent the milk from scorching and ensure the sauce becomes smooth. If your cheese sauce is too thick at any stage, you can easily fix this by whisking in a splash of additional milk to achieve your desired consistency.

Choosing the right cheese is essential; Gruyère provides a nutty depth, while sharp cheddar adds a tangy kick. Feel free to mix and match to suit your taste. For a lighter option, consider using part-skim cheeses, but keep in mind they may not melt as beautifully. Adding a touch of cream cheese can also enhance creaminess without compromising flavor.

Perfecting the Crunchy Topping

The topping is what elevates this gratin from ordinary to extraordinary. For the breadcrumbs, homemade ones can add a fresh crunch that store-bought options may lack. If you have stale bread, pulse it in a food processor for a quick breadcrumb replacement that's even more flavorful. Adding herbs or spices to the breadcrumb mixture can customize the dish—a sprinkle of paprika or dried thyme can enhance the overall experience.

Melted butter is crucial for achieving that golden-brown topping. Ensure the breadcrumbs are fully coated for maximum flavor and crunch. If your topping isn't achieving the desired color in the oven, you can broil it for the last couple of minutes, but keep a close eye to prevent burning. A subtle toastiness in the breadcrumb topping complements the creaminess of the cheese sauce beautifully.

Ingredients

Gather the following ingredients to get started on this delicious gratin:

Ingredients

1 large head of cauliflower, cut into florets
2 tablespoons olive oil
Salt and pepper to taste
2 cups shredded cheese (Gruyère or cheddar work great)
1 cup heavy cream
1/2 cup milk
2 cloves garlic, minced
1/4 teaspoon nutmeg (optional)
1/2 cup breadcrumbs
2 tablespoons unsalted butter, melted

With these ingredients at hand, you’re all set to create a savory gratin that will surely impress your guests!

Instructions

Follow these steps to make a delightful Sunday Roasted Cauliflower Gratin:

Roast the Cauliflower

Preheat your oven to 425°F (220°C). Toss the cauliflower florets with olive oil, salt, and pepper on a baking sheet. Roast for 20-25 minutes until the edges are golden and the cauliflower is tender.

Prepare the Cheese Sauce

In a saucepan, combine the heavy cream, milk, minced garlic, and nutmeg. Warm it over medium heat. Once warm, gradually add the shredded cheese, stirring until melted and smooth. Season with salt and pepper to taste.

Combine and Layer

In a greased baking dish, layer the roasted cauliflower and then pour the cheese sauce over it. Mix gently to combine.

Add Topping and Bake

In a small bowl, combine the breadcrumbs with melted butter. Sprinkle over the cauliflower and cheese. Bake in the oven for an additional 15-20 minutes, or until the top is golden brown and bubbly.

Once baked, allow the gratin to cool slightly before serving. Enjoy your delicious creation!

Pro Tips

For an extra flavor boost, consider adding cooked bacon pieces or caramelized onions into the mixture. This elevates the dish even further and adds a delightful touch.

Storage and Reheating

This gratin keeps well, making it a fantastic dish to prepare ahead of time. If you're planning to make it in advance, assemble the gratin without baking, cover it tightly with foil, and store it in the refrigerator for up to 2 days. When you're ready to bake, allow it to come to room temperature before placing it in the oven. This will help it cook more evenly and thoroughly.

To reheat leftovers, place individual portions in the microwave, using a cover to prevent dryness, or pop the entire dish back in the oven at 350°F (175°C) for about 20-25 minutes until heated through and bubbly again. Adding a little extra cheese or butter on top before reheating can rejuvenate the dish and keep it from drying out.

Serving Suggestions

This Roasted Cauliflower Gratin pairs beautifully with a variety of main dishes. Consider serving it alongside roasted chicken or a hearty beef stew. The richness of the gratin provides a lovely contrast to more robust flavors, making it a versatile side dish for any main. I also love pairing it with a crisp salad for a light yet fulfilling dinner.

For a vegetarian twist, incorporate sautéed mushrooms or spinach into the gratin before baking. These additions not only add nutritional value but also complement the creamy cheese sauce perfectly. To make this dish even more visually appealing, garnish with freshly chopped herbs like parsley or chives before serving; their vibrant green adds a beautiful contrast to the golden topping.

Questions About Recipes

→ Can I prepare this gratin in advance?

Absolutely! You can roast the cauliflower and prepare the cheese sauce a day ahead. Just combine and bake it when you're ready to serve.

→ What types of cheese work best for this recipe?

Gruyère, cheddar, or a mix of cheeses can work well. Feel free to experiment with your favorites!

→ Can I make this dish lighter?

Yes! You can substitute heavy cream with half-and-half or a lower-fat milk option, though the texture and flavor might be slightly different.

→ What can I serve with this gratin?

This gratin pairs wonderfully with a simple green salad, roasted meats, or as a side dish for a festive meal.