Cauliflower Gratin is a rich, cheesy, and comforting dish that works equally well for busy weeknights or holiday menus. In this recipe, tender cauliflower is cooked until just crisp-tender, then baked in a velvety homemade cream sauce until golden and bubbling.
There’s something irresistible about a creamy, cheesy casserole. This Cauliflower Gratin (or Cauliflower au Gratin) delivers the same comforting feel as potatoes au gratin but with far fewer carbs. The mild flavor of cauliflower soaks up the sauce, making every bite rich and flavorful.
✔️ Cauliflower Gratin
This easy baked cauliflower recipe can be served as a side dish or a satisfying vegetarian main. It’s simple to assemble, always popular with guests, and shows off how versatile cauliflower can be when paired with a luscious cheese sauce.
🔎 What Does This Baked Cauliflower with Cheese Taste Like?
Cauliflower Gratin has the creamy, savory profile of scalloped potatoes or classic au gratin dishes. Cauliflower’s subtle flavor becomes an ideal background for a smooth, cheesy sauce accented with a hint of nutmeg and black pepper.
✔️ Cauliflower Au Gratin Ingredients
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Cauliflower: Fresh heads are preferred, though frozen florets work in a pinch.
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Milk: Whole milk yields a richer sauce; for extra luxury use half-and-half.
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Cheese: A blend of shredded Gruyere, white cheddar, and Parmesan is ideal. Freshly shredded cheese melts more smoothly than pre-shredded varieties. You can also experiment with Gouda, Fontina, or Monterey Jack.
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Butter: Unsalted butter lets you control the seasoning.
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Flour: All-purpose flour to thicken the sauce.
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Bread Crumbs: Panko provides a light, crunchy topping.
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Seasonings: Salt, freshly ground black pepper, and a pinch of nutmeg.
🔎 How To Make Cauliflower Gratin
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Preheat the oven to 375°F (190°C).
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Cook the cauliflower until tender but still slightly firm (al dente). You can blanch florets in boiling salted water for 4–5 minutes, or microwave with a little water for about 5 minutes, then drain.
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Make a roux by melting butter and whisking in flour, cooking briefly to remove the raw flour taste.
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Gradually whisk cold milk into the roux, bring to a gentle boil, then reduce heat and simmer until the sauce thickens.
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Season with salt, pepper, and nutmeg. Stir in grated Gruyere, white cheddar, and most of the Parmesan until the sauce is smooth and creamy.
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Spread a portion of the cheese sauce in the bottom of a baking dish, arrange the cauliflower on top, then pour the remaining sauce over the florets and spread evenly.
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For the topping, mix melted butter with Panko breadcrumbs and the remaining Parmesan.
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Sprinkle the Panko mixture over the casserole and bake until the top is golden and crisp, about 25–30 minutes.
Can I Make This Cheesy Gratin with Broccoli?
Yes. Replace cauliflower with broccoli, but blanch broccoli briefly—about one minute—to keep it bright and crisp before baking.
Can I Use Pre-Shredded Cheese?
You can, but pre-shredded cheese often contains anti-caking agents that can affect melting. For the creamiest sauce, shred cheese from blocks.
🔎 Can I Make Cauliflower Gratin Ahead Of Time
Yes. Prepare the cauliflower, make the cheese sauce, and assemble the casserole, leaving off the Panko topping. Cover and refrigerate for up to 2 days. Before baking, let the dish sit at room temperature for 35–45 minutes, then add the topping and bake as directed.
✔️ Baked Cauliflower Gratin Variations
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Bacon: Stir in crispy bacon pieces or sprinkle on top for smoky crunch.
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Ham: Add cooked diced ham for a heartier, non-vegetarian option.
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Caramelized Onions: Fold sweet, golden onions into the dish before baking.
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Smoky Cheese Sauce: Use smoked Gouda with Gruyere for a deeper, smoky flavor.
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Tex‑Mex: Swap cheeses for Monterey Jack and Oaxaca, add diced green chiles and a pinch of cumin, and finish with chopped cilantro.
🔎 What To Serve With This Easy Cheesy Baked Cauliflower Recipe?
This gratin is versatile: serve it as a vegetarian main with a simple salad or sautéed green vegetables, or pair it with roasted meats like pork chops, roasted chicken, or baked salmon. It also fits seamlessly into holiday spreads alongside turkey, roast beef, or other festive mains.
Cauliflower Bake Recipe Tips
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Don’t overcook the cauliflower before baking—aim for al dente so it stays tender after baking.
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Store leftovers in an airtight container in the refrigerator for 2–3 days and reheat gently to preserve texture.
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Try combining vegetables—broccoli, fennel, or Brussels sprouts work well with the same cheese sauce for a mixed vegetable gratin.
More Thanksgiving Recipes That You’ll Love:
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Roasted Brussel Sprouts with Bacon
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Sweet Potato Casserole with Crunchy Topping
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Homemade Dinner Rolls
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Homemade Baked Mac and Cheese
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Oven Roasted Sweet Potatoes
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Roasted Green Beans
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Dutch Apple Pie
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Homemade Pumpkin Pie
Check These Cauliflower Recipes:
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Roasted Cauliflower Soup
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Cauliflower Fried Rice
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Roasted Parmesan Cauliflower
Easy Cauliflower Gratin
Kathy McDaniel
Pin
Ingredients
- 1 large head of cauliflower, cut into large florets (about 3 pounds – or 8 cups of florets)
- 4 tablespoons 1/2 stick butter, divided
- 3 tablespoons all-purpose flour
- 2 cups whole milk
- Salt to taste
- 1/2 teaspoon freshly ground black pepper
- 1/4 teaspoon nutmeg
- 1/2 cup grated Gruyere cheese
- 1/2 cup grated white cheddar cheese
- 1/2 cup grated Parmesan cheese
- 1/4 cup Panko breadcrumbs
- Chopped parsley or chives to garnish (optional)
Instructions
- Preheat the oven to 375°F (190°C).
- Cook the cauliflower florets until tender but still firm (al dente).
- Cook in boiling salted water for 4–5 minutes and drain, or microwave florets with ½ cup water covered for about 5 minutes, then drain.
- Meanwhile, melt 2 tablespoons butter in a saucepan over low heat. Add flour and cook 1–2 minutes, stirring constantly.
- Slowly whisk milk into the roux, bring to a gentle boil, then reduce heat and simmer until thickened. Remove from heat.
- Season with salt (about ½–1 teaspoon), black pepper, and nutmeg. Stir in Gruyere, white cheddar, and ¼ cup Parmesan until smooth.
- Spread one-third of the sauce in an 8 x 11 x 2-inch baking dish.
- Arrange drained cauliflower over the sauce and pour the remaining sauce over the florets, spreading evenly.
- Melt the remaining 2 tablespoons butter in a small bowl.
- Combine Panko, remaining Parmesan, and melted butter; sprinkle over the casserole.
- Bake 25–30 minutes until the top is golden brown. Garnish with chopped parsley or chives if desired and serve hot or at room temperature.
Nutrition
Carbohydrates: 14 g,
Protein: 14 g,
Fat: 20 g
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