Sunday Roasted Cauliflower Gratin

Name: Sunday Roasted Cauliflower Gratin
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: Serves 4
Ingredients: 1 large head of cauliflower, cut into florets; 2 cups shredded Gruyère cheese; 1 cup shredded cheddar cheese; 2 cups milk; 3 tablespoons unsalted butter; 3 tablespoons all-purpose flour; 1 teaspoon garlic powder; 1 teaspoon onion powder; Salt and pepper to taste; 1 cup breadcrumbs; 2 tablespoons fresh parsley, chopped

Highlighted under: Dessert Magic

I absolutely adore making this Sunday Roasted Cauliflower Gratin. It's become a cherished dish in my home, especially on lazy weekends. The creamy cheese sauce mingled with the roasted cauliflower creates a delightful combination that is both comforting and satisfying. I love how the crispy breadcrumbs on top add the perfect amount of crunch, making every bite a treat. This recipe is not just about flavor; it’s about the joy of sharing a heartfelt meal with loved ones, right from my kitchen to the dining table.

Created by

Harriet Mason

Last updated on 2026-01-13T05:22:15.443Z

Creating this dish was inspired by my love for vegetables and cheese. I wanted to elevate cauliflower, which often gets overlooked, into a star of the meal. After experimenting with various cheeses, I found that a blend of Gruyère and cheddar creates a rich and gooey texture that complements the roasted florets beautifully. I also discovered that roasting the cauliflower beforehand intensifies its flavor while adding a subtle sweetness.

Another tip I learned is to use fresh breadcrumbs mixed with herbs for the topping, which adds a fragrant, slightly crunchy finish that contrasts perfectly with the creamy filling. It’s the details that make such a difference, turning a simple vegetable into a celebration of flavors on a Sunday dinner table.

Why You'll Love This Recipe
Creamy cheese sauce that envelops tender cauliflower
Crispy breadcrumb topping adds the perfect crunch
A comforting dish that brings everyone to the table
Easily customizable with your favorite cheeses or herbs

The Role of Cauliflower

Cauliflower is the star of this dish, providing both substance and a mild flavor that absorbs the richness of the cheese sauce wonderfully. Choosing a large, fresh head of cauliflower allows for ample florets to roast, bringing out a nuttiness that enhances the overall taste. Look for cauliflower with tightly packed florets and dark green leaves, indicating freshness. If cauliflower isn't available, you can substitute it with broccoli or a mix of both for a vibrant twist.

Cutting cauliflower into evenly sized florets will ensure even cooking, allowing you to achieve that perfect tender-crisp texture. Remember that roasting brings out the natural sweetness of the vegetable, so don’t rush this step; let it brown slightly in the oven for about 20 minutes, which builds layers of flavor that contribute to the gratin.

Perfecting the Cheese Sauce

Creating a smooth and creamy cheese sauce is crucial for the success of this gratin. When melting the butter, keep the heat medium to avoid burning; this is the base for a roux, which thicken the sauce. Whisking continuously as you add the flour for about 2 minutes will help remove any raw flour taste and create a smooth mixture. Gradual incorporation of milk is key, as it prevents lumps and ensures a glossy texture that will cling pleasantly to the cauliflower.

For an extra depth of flavor, consider mixing in a pinch of mustard powder or a splash of Worcestershire sauce to the cheese sauce. This can elevate the dish to new heights, adding a subtle complexity that complements the richness without overwhelming the delicate cauliflower.

Final Touches and Serving

The breadcrumb topping is not just for aesthetics; it provides a pleasing crunch that contrasts beautifully with the creamy cheese sauce and tender cauliflower. If you prefer a richer topping, you can toss the breadcrumbs with a bit of melted butter or olive oil before adding them to enhance crispiness and flavor. Adding freshly grated Parmesan cheese to the breadcrumb mix can also bring a savory, salty note that enhances the overall experience.

This gratin can be served as a comforting side dish or a delightful main course when paired with a green salad for balance. Should you have leftovers, store them in an airtight container in the fridge for up to three days. Reheating it in the oven can restore some of that crispiness; simply cover loosely with foil and bake at 350°F (175°C) until heated through, about 15-20 minutes.

Ingredients

Gather these fresh ingredients for a delicious gratin:

Ingredients

1 large head of cauliflower, cut into florets
2 cups shredded Gruyère cheese
1 cup shredded cheddar cheese
2 cups milk
3 tablespoons unsalted butter
3 tablespoons all-purpose flour
1 teaspoon garlic powder
1 teaspoon onion powder
Salt and pepper to taste
1 cup breadcrumbs
2 tablespoons fresh parsley, chopped

Make sure to measure everything before you start cooking!

Instructions

Let’s get started on this mouth-watering gratin:

Preheat the Oven

Preheat your oven to 375°F (190°C) while you prepare the cauliflower.

Roast the Cauliflower

Spread the cauliflower florets on a baking sheet, drizzle with olive oil, and season with salt and pepper. Roast for about 20 minutes, until slightly golden and tender.

Make the Cheese Sauce

In a saucepan, melt the butter over medium heat. Add the flour and whisk for about 2 minutes. Gradually pour in the milk, whisking continuously until the mixture thickens. Stir in the garlic powder, onion powder, and half of the Gruyère and cheddar cheese.

Combine Ingredients

Once the cheese is melted, add the roasted cauliflower to the sauce and mix well. Pour the mixture into a greased baking dish.

Top with Breadcrumbs

In a bowl, combine the breadcrumbs, remaining cheese, and chopped parsley. Sprinkle evenly over the cauliflower mixture.

Bake

Bake for 20-25 minutes or until golden and bubbly. Let it cool for a few minutes before serving.

Serve warm and enjoy the cozy flavors!

Pro Tips

For extra flavor, add a pinch of cayenne pepper to the cheese sauce or mix in some sautéed mushrooms.

Ingredient Substitutions

If you're looking for lighter alternatives, you can swap whole milk for a lower-fat option or even plant-based milk; just ensure it’s unsweetened to maintain the savory profile of the dish. For cheese, feel free to experiment with different varieties like fontina or gouda for a unique flavor twist. You can also adjust the ratios of Gruyère and cheddar; a sharper cheddar will add a bold taste, while a milder cheese will result in a more subtle profile.

For those avoiding gluten, substitute regular breadcrumbs with gluten-free panko or crushed cornflakes. This maintains the crispy texture while accommodating dietary preferences.

Make-Ahead and Storage Tips

This gratin is a fantastic make-ahead dish! You can assemble the entire recipe up to the baking step, cover it tightly with plastic wrap, and refrigerate it for up to 24 hours. When ready to serve, remove the gratin from the fridge and let it sit at room temperature for about 20 minutes before baking; this helps it cook evenly. You'll likely want to increase the baking time by a few extra minutes since it's starting from a chilled state.

For longer storage, you can freeze the assembled gratin for up to 3 months. Just ensure to use freezer-safe containers. For best results, allow it to thaw in the fridge overnight before baking. This way, you can enjoy a cozy meal with minimal effort on a busy day.

Serving Variations

While this gratin is delightful as is, consider adding cooked proteins such as diced chicken, ham, or crispy bacon for a heartier dish. Adding vegetables like sautéed spinach or roasted bell peppers can increase its nutritional value and aesthetic appeal. You could even sprinkle a bit of red pepper flakes for a spicy kick occasionally.

Another serving variation is to use individual ramekins for portion control and a charming presentation. These can be baked just like a larger dish, adjusting the baking time to about 15-20 minutes, and they make for a lovely dinner party offering, allowing each guest their own gratin.

Questions About Recipes

→ Can I use frozen cauliflower?

Yes, just be sure to thaw and drain any excess water before roasting.

→ Can I make this ahead of time?

Absolutely! You can prepare it a day in advance and bake it just before serving.

→ What can I serve with this dish?

It pairs well with a simple salad or as a side to roasted meats.

→ Is this recipe gluten-free?

To make it gluten-free, use gluten-free breadcrumbs and flour.