Step 1

Preheat oven to 425°F. Lightly coat eight 6-ounce ramekins with cooking spray and place on a large rimmed baking sheet.

Step 2

Cook bacon in a large nonstick skillet over medium heat until crisp, 6 to 8 minutes. Transfer to a paper-towel-lined plate and chop when cool enough to handle. Transfer the bacon drippings to a large bowl. Add cauliflower, onion, Cheddar, ⅔ cup sour cream (or yogurt), pepper and salt. Stir to combine. Divide between the prepared ramekins; cover each with foil.

Step 3

Bake until the cauliflower is tender, 30 to 35 minutes. Remove foil and bake until lightly browned in spots, 5 to 10 minutes more. Dollop with the remaining ¼ cup sour cream (or yogurt) and sprinkle with the bacon and chives.