Pat the skirt steak dry and season both sides generously with salt and pepper.
In a heavy-duty skillet, heat oil over medium-high heat until very hot. Add the steak and sear both sides for 2 to 3 minutes per side for medium-rare, or until desired doneness.
Transfer the steak to a plate and let it rest.
In another skillet, melt the butter over low heat. Add the minced garlic and cook, stirring constantly, until lightly golden. Remove from heat immediately to prevent burning.
Slice the steak against the grain. Pour the garlic butter over the steak, garnish with chopped parsley, and serve immediately.
Notes
Let the steak rest for a few minutes before slicing to ensure it remains juicy and tender.