Take the steaks out of the refrigerator and let them rest at room temperature for 30 minutes.
Preheat your oven to 400°F (200°C).
Season the steaks generously with salt and pepper on both sides.
Heat olive oil in a cast-iron skillet over high heat until shimmering.
Add the steaks to the skillet and sear for 4 minutes without moving them.
Flip the steaks and add garlic and rosemary to the skillet.
Transfer the skillet to the preheated oven and roast for about 6-8 minutes for medium-rare.
While the steaks are cooking, boil the halved potatoes until fork-tender, about 10 minutes.
Drain the potatoes and toss them with olive oil, salt, and pepper.
In a separate pan, sauté asparagus in butter until tender, about 5 minutes.