Cut and prepare broccoli crowns into smaller pieces.
Place ice in a large bowl of water and set aside. Line a large plate with paper towels and set aside.
Fill a large pot with water and bring to a boil. Add broccoli and boil for one minute, just until the broccoli looks brighter in color. " Do not over boil!"
Remove broccoli with a strainer, immediately place broccoli in the ice water. Let it sit for 2 minutes. Remove the broccoli from the ice bath and transfer it to the plate that has been lined with the paper towels.
Heat oil in a large skillet over low-medium heat. Add your garlic cloves and red pepper flakes, allow the oil to absorb the flavor by sautéing for 1-2 minutes.
Turn the heat up to medium-high, then add the broccoli and sauté for 2-3 minutes.
Squeeze lemon juice over the broccoli, then remove from the pan and place in your serving bowl.
Salt and pepper to taste, then toss with parmesan.