Step 1

Preheat oven to 375 degrees F.

Step 2

Bring a large pot of water to a boil. Season the water with salt.

Step 3

Spray an 8x8 baking dish with vegetable oil spray.

Step 4

Cook the cauliflower in the boiling water until crisp-tender, about 5 minutes. Drain well and place back into the hot pot for a few minutes. Transfer the cauliflower to the baking dish and set aside.

Step 5

Bring the cream to a simmer in a small saucepan over medium heat, and whisk in the cream cheese and mustard until smooth. Stir in 1 1/2 cups of the cheese, salt, pepper, and garlic and whisk just until the cheese melts about 1 to 2 minutes. Salt and pepper to taste.

Step 6

Remove from heat, pour over the cauliflower, and stir to combine.

Step 7

Top with the remaining 1/2 cup cheese and bake until browned and bubbly, about 15 minutes.

Step 8

Allow to cool about 5 minutes then serve.