01 - Remove steaks from the refrigerator 30 minutes before cooking to bring them to room temperature. Pat them thoroughly dry with paper towels. Brush each steak with olive oil and season both sides generously with kosher salt and freshly ground black pepper.
02 - Heat a large skillet or grill pan over high heat until smoking. Place the steaks in the pan and cook for 3 to 4 minutes per side for medium-rare, adjusting time for your preferred doneness. Transfer the steaks to a plate, tent loosely with aluminum foil, and let them rest while you prepare the shrimp.
03 - Heat a large sauté pan over medium heat. Melt the butter, then add the minced garlic. Cook for about 1 minute, stirring constantly, until fragrant and lightly golden.
04 - Add the peeled and deveined shrimp to the pan. Season with salt, pepper, and crushed red pepper flakes if using. Sauté for 2 to 3 minutes, turning once halfway through, until the shrimp are pink and opaque throughout.
05 - Pour the fresh lemon juice over the shrimp and sprinkle with chopped parsley. Toss everything to combine evenly, then remove the pan from heat.
06 - Arrange each rested steak on a plate and spoon the garlic butter shrimp over the top. Garnish with additional chopped parsley and lemon wedges. Serve immediately.