For a richer flavor, consider using a high-quality Parmesan cheese, such as Parmigiano-Reggiano. Adjust the amount of garlic and red pepper flakes to suit your taste preferences. If you don't have butter-flavored cooking spray, you can substitute with a light drizzle of melted butter or olive oil. For a crispier topping, broil the cauliflower for the last minute of cooking, keeping a close eye to prevent burning. Feel free to add other cheeses like mozzarella or cheddar for a different flavor profile.