Keto Cauliflower Gratin with Cheese

In a medium saucepan over medium-low heat, combine 1 cup heavy cream, 4 oz softened cream cheese, and 2 minced garlic cloves. Whisk continuously until the cream cheese melts completely and the mixture is smooth.

Add 1 cup shredded sharp cheddar cheese to the cream mixture, whisking until fully melted. Season with 1/2 teaspoon salt, 1/4 teaspoon black pepper, 1/4 teaspoon garlic powder, and a pinch of cayenne for subtle heat.

Stir in 1/4 cup grated Parmesan cheese and 1 teaspoon Dijon mustard for depth of flavor. The sauce should be thick, creamy, and coat the back of a spoon. If too thick, thin with a tablespoon of heavy cream.

Arrange the dried cauliflower florets in the prepared baking dish. Pour the rich cheese sauce evenly over the cauliflower, using a spatula to ensure every piece is generously coated with the creamy mixture.

For the topping, mix 1 cup shredded cheddar, 1/4 cup grated Parmesan, and optionally 2 tablespoons crushed pork rinds for extra crunch (they're a perfect keto-friendly breadcrumb substitute with zero carbs).

Sprinkle the cheese topping mixture evenly over the sauced cauliflower. For added richness, dot the top with small pieces of butter, about 2 tablespoons total, which will help create golden, crispy spots as it bakes.

Place on the middle oven rack and bake for 25-30 minutes until the gratin is bubbling vigorously around the edges and the cheese topping has melted into a golden, slightly crispy layer with brown patches.

For maximum cheese crispiness, switch to broil for the final 2-3 minutes, watching very carefully to prevent burning. The top should develop deep golden-brown spots and crispy cheese edges for textural contrast.

Remove from oven and let rest for 8-10 minutes. The sauce will thicken as it cools, making it easier to serve. This resting period also allows the flavors to meld together beautifully for the best taste.

Serve hot as a satisfying keto side dish. This gratin provides approximately 5-7g net carbs per serving, making it perfect for low-carb meal plans. Garnish with fresh chopped chives or parsley for color and freshness.