Cauliflower au Gratin Recipe

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A wooden spoon served this low-carb, keto side dish.

4.50 from 2 votes

Cauliflower au Gratin Recipe

Allow me to introduce you to this cheesy Cauliflower au Gratin, your new favorite easy low-carb recipe! Serve this healthy vegetarian casserole for Thanksgiving or any holiday dinner.

Prep Time10

Cook Time45

Total Time55

Course: Side Dish

Cuisine: American

Servings: servings

Author: London Brazil

Ingredients

1 large head cauliflower cut into florets, about 5 cups
2 Tbsp. oil olive or avocado
1 tsp. salt divided
¼ tsp. black pepper
2 Tbsp. butter or oil
2 cloves garlic crushed
2 Tbsp. flour gluten-free 1-to-1 blend
1 ½ cups milk regular or cashew milk
¾ cup cheese gruyere, asiago, or mixed
½ cup Parmesan cheese grated, divided
¼ tsp. dried thyme
¼ tsp. coriander
¼ cup Panko bread crumbs gluten-free, optional

Instructions

Preheat oven to 425°F.
Add cauliflower florets to a 13 by 9-inch baking dish along with 2 tablespoons of oil, ½ teaspoon salt, and ¼ teaspoon black pepper.
Toss to combine and spread cauliflower out in the dish. Bake in preheated oven for 15-20 minutes.
While cauliflower is baking, add 2 tablespoons of butter and crushed garlic to a large skillet or saucepan. Saute over medium heat for 1 minute.
Sprinkle flour into the pan and whisk for 1-2 minutes, or until it begins to form a paste.
Reduce heat to medium-low. Pour in room-temperature milk, ¼ cup at a time, whisking well after each addition. Wait to add the next amount until the sauce has thickened.
Once all of the milk is added, turn off the heat and mix in gruyere cheese, ¼ cup Parmesan cheese, ½ teaspoon salt, thyme, and coriander.
Pour sauce over baked cauliflower and toss to combine.
Mix together remaining Parmesan cheese and breadcrumbs in a small bowl. Sprinkle over cauliflower.
Reduce oven temperature to 400 °F and return cauliflower dish to oven for 20-25 minutes.
For an extra crispy topping, broil casserole for 2-3 minutes under a high broil.
Serve with fresh thyme and enjoy!

Video

Notes

For a keto diet: Leave off the breadcrumbs and you'll bring the nutritional values to 156 calories, 7 carbs, and 2 grams fiber.
Feel free to substitute the Gruyere cheese for a white cheese blend, Mozzarella, mild cheddar, or white cheddar.
To Store: This cauliflower gratin tastes best when it is served immediately. You can save covered leftovers in the refrigerator for up to 3-5 days. Just note it will get soggy and not have the same incredible texture.
To Freeze: Since the texture will change it is not recommended to freeze. If you do, seal it tightly in a freezer-safe airtight container for up to 3 months.

Nutrition