Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Trim the woody ends off the asparagus and place the spears on the baking sheet.
Drizzle the asparagus with olive oil and season with 0.25 tsp sea salt and 0.125 tsp black pepper, tossing to coat evenly.
Roast the asparagus for 12 to 15 minutes until tender and slightly charred at the tips.
While the asparagus roasts, pat the sirloin steak dry with paper towels and cut into 1-inch cubes.
Season the steak bites with the remaining sea salt, black pepper, and dried thyme.
Heat a large cast-iron skillet over medium-high heat and add the ghee.
Once the ghee is shimmering, add the steak bites in a single layer, ensuring they do not crowd the pan.
Sear the steak for 2 minutes without moving them to develop a crust, then flip and cook for another 2 minutes.
Reduce the heat to medium, add the minced garlic, and toss with the steak for 1 minute until the garlic is golden and fragrant.
Remove the skillet from the heat, garnish with fresh parsley, and serve immediately alongside the roasted asparagus.