Pre heat the oven to 425 Degrees F (220 degrees C).
Spray a baking sheet with olive oil.
Add broccoli, olive oil, garlic, salt, lemon juice and lemon zest in a bowl and mix well.
Transfer the broccoli on the baking sheet and spread evenly in a single layer.
Bake for 12-15 minutes.
Remove the tray from the oven and sprinkle parmesan cheese on the broccoli.
Bake for another 5-6 minutes if you wish to, for extra crunch.
Cut the broccoli into even bite size pieces.Do not over crowd the baking sheet. While roasting, broccoli will release steam and if there isn't enough space for it to escape, it will make the broccoli soggy instead of crispy.If you want no cleaning business after cooking this recipe, just mix all the ingredients in a zip lock bag, line the tray with aluminium foil. Discard the zip lock bag and aluminium foil after baking and you have a clean kitchen with no traces of cooking after baking this recipe.However, to reduce the usage of plastic, I encourage to mix it up in a glass bowl and wash the bowl afterwards.I recommend roasting the broccoli at a slightly higher temperature as gives a nice crunch to the outer later.You can also add 1/4 cup breadcrumbs to the broccoli for added crunch.Increase or decrease the amount of garlic as per your liking. I like it garlicky hence more garlic.Bake for another 5-6 minutes after adding the cheese for a more caramelised taste.