Ingredients:

16 ounces cauliflower, chopped into macaroni sized pieces
¼ cup heavy cream
2 ounces cream cheese, room temperature
1 cup grated cheddar cheese
1/3 cup grated Monterey jack cheese
½ teaspoon ground mustard
½ teaspoon salt
½ teaspoon cracked pepper

Instructions:

Bring a pot of water to a boil. Add the cauliflower pieces and boil for 5 minutes.
Drain the water and return the cauliflower to the pot over low heat.
Add the remaining ingredients and stir well until the cheese has melted fully, about 3 minutes. Serve immediately.