Preheat oven to 450 degrees F. Line baking sheet with parchment paper.
Toss cut cauliflower in olive oil. Make sure to coat entire surface of vegetable. Spread cauliflower into a single layer on prepared baking sheet. Do not over crowd pan, allow ample space.
Generously season with salt and pepper.
Bake for 15-20 minutes until edges and flat areas of cauliflower have browned. Cook time may vary depending on size of your florets. Serve warm and garnish with chopped Italian parsley and shredded parmesan cheese.