There is something irresistibly comforting about this Creamy Baked Cauliflower Gratin Recipe that makes it a standout side dish or even a main for cozy dinners. The tender cauliflower florets bathed in a luscious, cheesy sauce create a perfect balance of flavors, while the golden, crispy breadcrumb topping adds a delightful crunch. It’s a timeless classic that combines simplicity with sophistication, transforming humble cauliflower into a true crowd-pleaser. Whether you’re looking for a way to sneak veggies into your meal or craving warm, cheesy goodness, this recipe delivers every single time.

Ingredients You’ll Need
Gathering these simple yet essential ingredients is the first step to making a gratin that is rich, creamy, and beautifully textured. Each element plays a crucial role, whether it’s developing that velvety sauce, adding a nutty depth, or creating a bubbly, golden crust.
- 3-pound head of cauliflower: The star of the dish, providing a mild flavor and tender texture that soaks up the sauce perfectly.
- 3 tablespoons unsalted butter: Adds richness and helps create a smooth roux for the sauce.
- 3 tablespoons all-purpose flour: Essential for thickening the cheese sauce to the perfect consistency.
- 2 cups milk: Gives the gratin its creamy base; whole milk works best for richness.
- 3/4 cup grated Gruyère cheese: Brings a lovely nutty flavor and melts beautifully into the sauce.
- 1/2 cup grated parmesan cheese: Adds a salty, savory punch that complements the Gruyère.
- Fresh breadcrumbs for topping: Create that irresistible crisp layer on top.
- Salt, pepper, thyme, and nutmeg: These seasonings quietly elevate the dish with warm, fragrant notes.
How to Make Creamy Baked Cauliflower Gratin Recipe
Step 1: Prepare Your Cauliflower
Start by preheating your oven to 375°F (190°C) and greasing an 8 x 11 x 2-inch casserole dish so nothing sticks. Then, chop the cauliflower into florets and steam or boil them in salted water just until they’re tender but still hold their shape—about 5 to 6 minutes. This ensures they become creamy once baked, but not mushy.
Step 2: Make the Cheese Sauce
In a medium saucepan over medium heat, gently melt the butter. Whisk in the flour and cook it until it turns a light golden brown, creating a roux that will thicken the sauce perfectly. Slowly pour in the milk, whisking continuously to avoid lumps, until the sauce thickens to a creamy consistency. Now, stir in thyme, freshly grated nutmeg, salt, and pepper to make the flavors pop. Finally, fold in the Gruyère and parmesan cheeses until everything is silky smooth and luscious.
Step 3: Assemble the Gratin
Spread a little of the cheese sauce on the bottom of your prepared casserole dish—this prevents the cauliflower from sticking and adds layers of creamy flavor. Arrange the cauliflower florets evenly on top, then cover them with the remaining cheese sauce, ensuring every bite is gooey and cheesy.
Step 4: Add the Topping and Bake
Sprinkle a generous layer of fresh breadcrumbs over the surface, followed by a little extra Gruyère cheese for that perfect golden crust. Bake the gratin in your preheated oven for about 30 minutes until you see a bubbly, golden-brown top that’s crisp to the touch—the moment it comes out will fill your kitchen with the most comforting aroma.
How to Serve Creamy Baked Cauliflower Gratin Recipe
Garnishes
To enhance the look and flavor, try sprinkling chopped fresh parsley or chives over the gratin just before serving. The fresh green color adds a lovely contrast to the golden top while lending a fresh, herbal brightness that cuts through the richness delightfully.
Side Dishes
This Creamy Baked Cauliflower Gratin Recipe pairs wonderfully with a variety of mains. It’s a perfect accompaniment to roasted chicken, grilled steak, or even a simple pan-seared fish. For a full meal, add a crisp green salad dressed in lemon vinaigrette to bring a refreshing note alongside the creamy richness.
Creative Ways to Present
Feel like impressing guests? Serve this gratin in individual ramekins for elegant plating. You can also sprinkle some toasted nuts like walnuts or pecans on top for additional crunch and a slightly nutty flavor. For a seasonal twist, add a touch of roasted garlic into the cheese sauce before baking to deepen the savory punch.
Make Ahead and Storage
Storing Leftovers
Any leftovers from this Creamy Baked Cauliflower Gratin Recipe keep well in an airtight container in the refrigerator for up to 3 days. The texture may soften a bit, but the flavors remain wonderfully comforting. Simply cover it tightly to prevent any moisture loss.
Freezing
If you want to save some for later, this gratin freezes beautifully. After baking, allow it to cool completely, then cover tightly with foil or place it in a freezer-safe container. It can be frozen for up to 2 months without losing much of its creamy, cheesy goodness.
Reheating
To reheat, thaw the frozen gratin overnight in the refrigerator. Then, warm it gently in a 350°F (175°C) oven for 20 to 25 minutes until heated through and bubbling again. If you want to revive the crisp topping, you can broil for a couple of minutes at the end, watching closely to avoid burning.
FAQs
Can I use a different cheese instead of Gruyère?
Yes, you can substitute Gruyère with cheeses like Emmental, fontina, or even a sharp cheddar. Just keep in mind that each cheese will slightly change the flavor and melt differently, so choose one that melts smoothly for best results.
Is it necessary to steam or boil the cauliflower first?
Pre-cooking the cauliflower ensures that it cooks evenly and becomes tender in the gratin without drying out. Skipping this step might result in a crunchy or underdone vegetable inside the creamy sauce.
Can I make this dish vegan or dairy-free?
With some creativity, yes. Use plant-based butter and milk alternatives like oat or almond milk, and substitute cheese with vegan cheese options that melt well. Keep in mind the flavor profile will be different, but it can still be delicious.
What can I use instead of fresh breadcrumbs?
If fresh breadcrumbs aren’t available, store-bought panko or regular dried breadcrumbs work well. You can also toast some bread slices and pulse them in a food processor to make your own crunchy topping.
How can I add more flavor to the cheese sauce?
For an extra flavor boost, consider adding a splash of white wine or a teaspoon of Dijon mustard to the sauce while it’s cooking. Fresh herbs like rosemary or sage also complement the cauliflower and cheese beautifully.
Final Thoughts
I can’t recommend this Creamy Baked Cauliflower Gratin Recipe enough—it’s one of those dishes that feels like a warm hug in food form. Whether for a family dinner or a special occasion, it elevates simple ingredients into something truly comforting and impressive. Give it a try, and watch it become an instant favorite in your recipe collection!
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Creamy Baked Cauliflower Gratin Recipe
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: 6 servings
- Category: Side Dish
- Method: Baking
- Cuisine: French
- Diet: Vegetarian
Description
A rich and comforting Creamy Baked Cauliflower Gratin featuring tender cauliflower florets smothered in a luscious cheese sauce made with Gruyère and Parmesan, topped with crispy breadcrumbs and baked until golden brown. Perfect as a hearty side dish or a satisfying vegetarian main course.
Ingredients
Cauliflower
- 1 head cauliflower (about 3 pounds), cut into florets
Cream Sauce
- 3 tablespoons unsalted butter
- 3 tablespoons all-purpose flour
- 2 cups milk
- 3/4 cup grated Gruyère cheese
- 1/2 cup grated Parmesan cheese
- 1/2 teaspoon dried thyme
- 1/4 teaspoon ground nutmeg
- Salt, to taste
- Black pepper, to taste
Topping
- Fresh breadcrumbs, for topping (about 1/2 cup)
- Additional grated Gruyère cheese, for topping (about 1/4 cup)
Instructions
- Preheat Oven and Prepare Dish: Preheat your oven to 375°F (190°C) and lightly grease an 8 x 11 x 2-inch casserole dish to prevent sticking and help with even baking.
- Cook Cauliflower: Steam or boil the cauliflower florets in salted water until they are firm but tender, which should take about 5 to 6 minutes. Once cooked, drain well to remove excess water.
- Make Cheese Sauce: In a medium saucepan over medium heat, melt the unsalted butter. Whisk in the flour and cook until the mixture is golden brown to form a roux. Gradually pour in the milk while continuously whisking to prevent lumps, and cook until the sauce thickens to a creamy consistency.
- Season and Add Cheese: Stir in dried thyme, ground nutmeg, salt, and pepper to taste. Then add the Gruyère and Parmesan cheeses, stirring until the cheeses have fully melted into a smooth, creamy sauce.
- Assemble Gratin: Spread a layer of cheese sauce at the bottom of the prepared casserole dish. Arrange the cooked cauliflower florets evenly over this layer. Pour the remaining cheese sauce over the cauliflower, ensuring it’s fully covered. Sprinkle fresh breadcrumbs and an extra layer of grated Gruyère cheese evenly on top for a crunchy, golden crust.
- Bake: Place the casserole dish in the oven and bake for about 30 minutes or until the topping is golden brown and bubbling around the edges. Remove from oven and let rest for a few minutes before serving.
Notes
- For extra flavor, sprinkle freshly chopped parsley or chives on top before serving.
- To make this gluten-free, substitute the all-purpose flour with gluten-free flour or cornstarch.
- You can prepare the cheese sauce ahead of time and reheat gently before assembling the gratin.
- Use whole milk for a richer sauce, or substitute with 2% milk for a lighter version.
- Make sure to dry the steamed cauliflower thoroughly to avoid a watery gratin.

