01 - Heat oven to 400°F. Prepare a large baking sheet by lining with parchment paper and lightly coating with nonstick spray.
02 - Place cauliflower florets in a steamer basket over boiling water and steam for 8–10 minutes until tender.
03 - Transfer steamed cauliflower to a clean kitchen towel and allow to cool for a few minutes.
04 - Wrap cauliflower in the towel and squeeze forcefully to remove as much moisture as possible.
05 - Add dried cauliflower florets to a food processor and pulse several times until finely chopped but not puréed.
06 - Transfer processed cauliflower to a bowl. Add cheddar cheese, chives, breadcrumbs, beaten egg, garlic powder, onion powder, salt, and pepper. Mix thoroughly until evenly combined.
07 - Using hands, shape mixture into approximately 1-inch oval pieces and arrange evenly on the prepared baking sheet.
08 - Mist tater tots with nonstick spray. Bake for 18–22 minutes, turning halfway through, until golden and crisp.
09 - Allow tater tots to cool slightly before serving. Enjoy immediately for best texture.