01 - Set the oven temperature to 400°F.
02 - Slice the top off the garlic bulb to reveal the cloves. Drizzle olive oil over it, wrap in foil, and roast for 30 to 35 minutes until soft and golden. Allow to cool slightly.
03 - Steam cauliflower florets over simmering water for 12 to 15 minutes until fork-tender.
04 - Squeeze the roasted garlic cloves from their skins.
05 - In a food processor or using a potato masher, blend steamed cauliflower, roasted garlic, butter, cream cheese, and milk until smooth and creamy.
06 - Add salt and pepper to taste, mixing thoroughly. Transfer to a serving bowl and garnish with chopped fresh chives if desired. Serve warm.