Remove the steak from the refrigerator 20 minutes before cooking and pat dry with paper towels; season both sides with sea salt and black pepper.
Heat a cast-iron skillet over medium-high heat and add the avocado oil.
Once the oil is shimmering, place the steak in the pan and sear for 3-4 minutes per side for medium-rare, or until it reaches your desired doneness.
In the final 2 minutes of cooking, add the butter, minced garlic, rosemary, and thyme to the pan.
Tilt the pan slightly and use a spoon to continuously baste the steak with the melting herb butter.
Remove the steak from the pan and let it rest on a cutting board for 5-10 minutes.
While the steak rests, toss the asparagus into the same pan and sauté for 3-5 minutes until bright green and tender.
Slice the steak against the grain and serve alongside the asparagus, drizzling any remaining pan juices over the top.