Preheat oven to 425 degrees.

Cut cauliflower into florets and smash garlic, toss with olive oil and season with salt. Roast cauliflower and garlic on baking sheet for 40 minutes.

Toss roasted cauliflower and garlic in food processor and pulse until well combined. Next add salt, pepper, and chicken stock. Pulse until cauliflower starts to become smooth, then while the food processor is running drizzle in olive oil until nice and smooth.

To serve, sprinkle with chopped chives.