Preheat oven to 400 degrees Fahrenheit. Line a rimmed baking sheet with parchment paper and set aside.

In a large mixing bowl toss the florets and olive oil. Add the grated cheese and toss until evenly coated.

Spread on the prepared baking sheet and bake on the center rack for 20 minutes, stirring and rotating the pan halfway through the baking time.

Serve immediately.