Rinse asparagus and pat dry. Break off woody ends and discard.
Combine asparagus and ghee or olive oil on baking sheet and mix together with your hands to coat. (If using dried chili flakes, add to oil before mixing with asparagus.)
Wrap each asparagus spear with a strip of prosciutto, angling as you wrap to cover most of the asparagus.
Arrange on baking sheet and broil for 5-7 minutes, until prosciutto is sizzling and crispy and asparagus is tender.
Remove to serving platter. Drizzle with balsamic vinegar, if desired. Serve immediately.