Preheat your oven to 400°F (200°C) and line a small baking sheet with parchment paper.
Trim the woody ends off the asparagus and place the spears on the baking sheet, tossing with a tiny drizzle of ghee (reserved from the tablespoon) and a pinch of salt and pepper.
Roast the asparagus for 10-12 minutes until tender and slightly charred at the tips.
While the asparagus roasts, pat the sirloin steak dry with paper towels and season both sides generously with the remaining sea salt and black pepper.
Heat a cast-iron skillet over medium-high heat until very hot, then add the remaining ghee.
Place the steak in the skillet and sear for 3-4 minutes on the first side without moving it to develop a golden-brown crust.
Flip the steak and immediately add the smashed garlic cloves, fresh rosemary, and fresh thyme to the pan.
Tilt the pan slightly and use a spoon to continuously baste the steak with the melted garlic-herb ghee for another 3-4 minutes for medium-rare.
Remove the steak from the pan and let it rest on a cutting board for 5 minutes to allow the juices to redistribute.
Slice the steak against the grain and serve immediately alongside the roasted asparagus.