Preheat oven to 350 degrees F and grease a 9×13 baking dish.
Bring a large pot of water to a boil and cook the cauliflower just until tender, about 3-4 minutes.
Drain the cauliflower to eliminate as much moisture as possible, then transfer cauliflower to the prepared baking dish.
In a medium bowl, beat together the eggs, heavy cream, seasonings, and cheese. Mix in the melted butter (make sure butter has cooled before adding it in).
Pour cheese mixture over the cauliflower and top with the remaining ½ cup parmesan.
Bake for 35-40 minutes or until top begins to brown.
Serve warm.