Preheat the oven to 425 degrees F. Line a rimmed baking sheet with parchment; set aside.
Place the grated cauliflower in a microwave-safe bowl and microwave for 2 minutes, then stir and microwave again for another 2 minutes. If you don't use a microwave, a steamer works just as well. Let the cooked cauliflower cool. Then place the cauliflower in a fine cheesecloth or thin dishtowel and squeeze out as much liquid as possible.
In a large bowl, add the cooked cauliflower, cheese, panko, eggs, onion powder, salt and pepper.
Using your hands, scoop up 1 tablespoon of the mixture and mold it into a tater tot shape. Repeat with the remaining ingredients.
Bake the tots for 15 minutes. Then turn them over and bake for an additional 10 minutes, or until golden brown. Serve with ketchup or your favorite dipping sauce.
Notes
These tots freeze well. Bake them, and then place the cooked tots in a freezer zip baggie for up to one month. Reheat in a 400 degree oven for 10 minutes, or until crisp and heated through.