Don’t crowd the pan. If you pile broccoli too high, it steams instead of sears. You get soggy tragedy. Cook in batches if you have to.
Don’t use wet broccoli. Pat it dry with a towel. Water is the enemy of crispiness. You want dry florets and hot oil.
And don’t skip the salt. Salt draws out moisture and creates that crust. Yes, it’s okay to be generous. You’re not a doctor.