Place the cauliflower florets in a covered microwaveable bowl and microwave 4-5 minutes.
Drain the cauliflower and place in a food processor or blender and process until very smooth.
Place the remaining ingredients in a large microwave safe bowl, add the cauliflower paste, and mix well.
Microwave 2 minutes, then stir. Microwave another 2 minutes, stirring occasionally, until the mozzarella cheese is melted.
Taste and add more buffalo sauce if needed. Drizzle with extra sour cream or buffalo sauce for garnish when serving, if desired.