Cheesy Roasted Cauliflower: Low-Carb Side Dish

This easy cheesy roasted cauliflower recipe makes a flavorful, low-carb side dish that’s quick to prepare and perfect for weeknight dinners or special occasions. Using a fresh whole head of cauliflower, a simple creamy mustard sauce, and melty cheese, this dish comes together with minimal effort. It’s keto-friendly, reheats well, and is a great substitute for starchy sides like potatoes.

Cheesy Frosted Cauliflower is prepared by steaming a whole head of cauliflower until tender, spreading a simple mayonnaise-and-mustard mixture over it, then topping with cheese and finishing in the oven until the cheese melts. The result is a creamy, satisfying vegetable side that has become a favorite on our weekly menu.

Cheese Frosted Cauliflower Ingredients

This recipe is simple and flexible. If you prefer, you can use cauliflower pieces rather than a whole head. The core recipe uses just a few pantry staples and one optional ingredient for a touch of sweetness.

Ingredients:

• Whole head of cauliflower – use a fresh, firm head for best texture.
• Mayonnaise – provides the creamy base for the frosting.
• Dijon mustard – brightens the sauce; honey mustard or plain mustard can be substituted.
• Colby-Jack cheese slices – slices melt nicely; shredded cheese or other varieties like cheddar or Monterey Jack work too.
• Salt and pepper – to taste.
• Honey – optional, for a sweet-savory balance; skip if using honey mustard.

How to Make a Cheesy Steamed Whole Head of Cauliflower

1. Prepare the cauliflower: Trim away the outer leaves at the base of the cauliflower, being careful not to remove too much stem so the head stays intact.

2. Steam: Place the cauliflower in a steamer basket with 1–2 cups of water in the pot beneath. Sprinkle about half the salt over the head and steam for 12–15 minutes, or until a fork pierces the center easily. If you don’t have a steamer, you can simmer the cauliflower in a large stockpot with a small amount of water until tender.

3. Make the sauce: While the cauliflower steams, whisk together the mayonnaise and Dijon mustard. If you want a slightly sweet finish, stir in a tablespoon of honey to create a honey-mustard frosting.

4. Assemble and bake: Transfer the steamed cauliflower to a round 2–3 quart baking dish. Spread the mayonnaise-mustard sauce evenly over the top, season with the remaining salt and pepper, and arrange the cheese slices over the cauliflower. Bake in a 350°F (175°C) oven for about 10 minutes, until the cheese melts and everything is heated through.

This cheesy cauliflower is an excellent accompaniment to pork chops, roasted chicken, or grilled steak, and works well as a low-carb alternative to mashed potatoes. Leftovers reheat nicely in the oven or microwave.

Tips for Roasting the Perfect Cauliflower

• Don’t overcrowd the pan: If you choose to roast florets rather than a whole head, spread them in a single layer so they brown evenly.
• Use fresh cauliflower: Fresh heads have the best texture and flavor compared with frozen.
• Try different cheeses: Experiment with Gruyère, sharp cheddar, Monterey Jack, or a blend for varied flavor profiles.
• Add spice: A pinch of red pepper flakes, smoked paprika, or garlic powder can add a pleasant kick.

This versatile side pairs well with many proteins and is easy to scale for larger gatherings. Whether you’re keeping things low-carb, feeding a crowd, or just craving something cheesy and comforting, this Cheesy Frosted Cauliflower is a dependable and delicious choice.

Side Dish Recipes