Preheat your oven to 400°F.
In a large mixing bowl, combine the riced cauliflower, melted butter, minced garlic, sour cream, and dried chives. Stir until well blended.
Add the garlic salt and seasoned pepper to the mixture, stirring thoroughly to ensure even seasoning.
Mix in half of the shredded cheddar and Parmesan cheese, combining well.
Lightly butter the bottom of a 9 x 9-inch casserole dish. Pour the cauliflower mixture into the dish, spreading it evenly.
Sprinkle the remaining cheddar and Parmesan cheese evenly over the top of the casserole.
Add the crumbled bacon as a topping, distributing it evenly across the dish.
Bake in the preheated oven for 20 minutes, or until the casserole is hot and bubbly.
Remove from the oven and sprinkle minced parsley over the top for a fresh garnish.
Serve warm and enjoy this creamy, cheesy, and flavorful cauliflower bake.