Head of Cauliflower Unsalted Butter Sour Cream Garlic Powder Salt Pepper Optional: grated cheese, chives, and crumbled bacon.
Microwave cauliflower until VERY tender.
Place cauliflower and butter in a food processor and blend on high speed until smooth
Transfer to a bowl and stir in the remaining ingredients. (Can also add before mashing.)
Warm if needed. Adjust salt & pepper. Top with grated cheese, chives, and even bacon.