Cauliflower Mashed "Potatoes"

Bahan-bahan (4 porsi)

• 1 head cauliflower (chopped, about 2.5-3 pounds)
• 2 ounces cream cheese
• ¼ cup sour cream
• ½ teaspoon onion powder
• ⅛ teaspoon garlic powder
• salt and black pepper (to taste)
• chopped fresh chives (and butter for topping)