Preheat your oven to 400°F and prepare a baking sheet.
Toss the asparagus spears with extra virgin olive oil and a pinch of salt and pepper on the baking sheet.
Roast the asparagus for 10-12 minutes until they are tender and slightly charred at the tips.
While the asparagus roasts, pat the porterhouse steak completely dry with paper towels to ensure a good sear.
Season both sides of the steak generously with the sea salt and black pepper.
Heat a heavy cast-iron skillet over medium-high heat until it is very hot and just beginning to smoke.
Place the steak in the hot skillet and sear for 3-4 minutes per side for medium-rare.
Reduce the heat to medium and add the ghee, smashed garlic clove, rosemary, and thyme to the side of the pan.
Tilt the skillet slightly and use a large spoon to continuously baste the steak with the melting herb-infused ghee for 2 minutes.
Remove the steak from the pan and let it rest on a cutting board for at least 5 minutes to allow the juices to redistribute.
Serve the steak whole or sliced, drizzled with the remaining garlic-herb ghee from the pan, alongside the roasted asparagus.