01 - Preheat oven to 425°F.
02 - In a small bowl, combine softened butter, minced garlic, chopped rosemary, and thyme. Mix well and set aside.
03 - Pat steaks dry with paper towels. Rub each steak with olive oil, then season all sides generously with kosher salt and freshly ground black pepper.
04 - Heat a large oven-safe skillet over medium-high heat. Sear steaks for 2 to 3 minutes per side until a deep golden-brown crust forms. Remove from skillet and set aside.
05 - On a baking sheet, toss trimmed broccolini with olive oil, kosher salt, black pepper, and lemon zest. Arrange in a single layer and place lemon slices on top.
06 - Roast broccolini in the preheated oven for 15 to 18 minutes, turning halfway through, until tender-crisp with lightly charred edges.
07 - Return the skillet to medium heat. Place steaks back in the skillet and top each with a generous spoonful of the garlic-herb butter. Transfer the skillet to the oven during the last 5 to 7 minutes of broccolini roasting. Cook until steaks reach desired doneness: 125°F for rare or 135°F for medium-rare.
08 - Remove steaks from the oven and let rest for 5 minutes to allow juices to redistribute. Slice against the grain.
09 - Arrange sliced steak alongside roasted broccolini. Garnish with lemon wedges and additional fresh herbs if desired.