Preheat the oven to 425 degrees Fahrenheit. Line a baking sheet with parchment paper.
Chop the broccoli into medium-sized florets, leaving a good amount of the stem for a nice shape (see the photo). In a large bowl, mix the broccoli florets with the olive oil, kosher salt, and Parmesan cheese. Place the shreds that fall onto the parchment paper on top of the florets.
Roast for 15 minutes. Then flip the broccoli and roast about 8 minutes until browned and crispy.