Wash and trim the Brussels sprout by cutting off the hard stem, removing the dead or yellow leaves, and cutting them in halves.
Brush the pan with olive oil
Spread them evenly on the pan to create enough room to release steam and crisp up, then drizzle olive oil on the Brussels sprout (You can brush them lightly with the olive oil).
Heat the Brussels sprout at a high temperature for about 15-25 minutes until they are deeply golden brown, crispy on the outside, and can be pierced through with a fork.
Pour into a bowl and season with red pepper flakes and balsamic vinegar or lemon juice as desires.
You can also add grated parmesan cheese. Serve hot and enjoy.