Cut the cauliflower into florets. Boil or steam the cauliflower until it is very soft, which should take about 10–15 minutes.
Drain the cooked cauliflower.
Mash or blend the cauliflower with 1-2 tablespoons of butter and 3-6 tablespoons of cream until it is smooth and creamy.
Season the cauliflower mash with salt and black pepper to taste. Keep it warm.