Keto Cauliflower Mac and Cheese

Name: Keto Cauliflower Mac and Cheese
Ingredients: 1 large cauliflower head or two bags of riced cauliflower, frozen; 1/2 cup heavy cream; 2 oz cream cheese room temperature; 2 tbs butter unsalted; 1 cup sharp cheddar cheese shredded; 1/2 cup Monterey Jack cheese shredded; 1 tsp ground mustard; 1 tsp salt; 1 tsp pepper; 1 tsp paprika; 2 tbs parsley for garnish