Cauliflower "Mashed Potatoes"

Name: Cauliflower "Mashed Potatoes"
Total time: 30 min
Yield: 3 servings
Ingredients: 3 pounds cauliflower; 1 tablespoon butter; 1 tablespoon heavy cream; 2 tablespoons cheddar cheese grated; salt; pepper; scallions chopped, for garnish; melted butter or olive oil, for drizzling, optional