Step 1

Preheat the oven to 425°F with a rack in the center position.On a large rimmed sheet pan, toss the cauliflower with the olive and arrange in a single layer

Step 2

Evenly sprinkle the cauliflower with the salt, garlic powder, and red pepper flakes.Roast the cauliflower for 20 minutes

Step 3

Remove the sheet pan from the oven

Step 4

Turn the cauliflower and roast for another 10 minutes, or until browned and tender

Step 5

Remove the sheet pan from the oven

Step 6

Sprinkle with Parmesan cheese, then roast until the cheese is melted and browned, about 5 minutes more