Set a large pot of salted water on the stove and bring to a rolling boil. Meanwhile, clean and cut your cauliflower. Boil the cauliflower 6-7 minutes until tender all the way through. Drain thoroughly and pat dry with paper towels.
To a food processor, add the cauliflower, cream cheese, parmesan, garlic, salt, and pepper. Pulse until the mixture resembles mashed potatoes. Taste for seasoning and adjust if needed. Transfer to a serving dish. garnish with chives and butter.