01 - Remove steaks from the refrigerator 30 minutes before cooking to bring them to room temperature. Pat the steaks thoroughly dry with paper towels. Brush both sides with olive oil and season 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 rest while preparing the shrimp.
03 - In a large sauté pan over medium heat, melt the unsalted butter. Add the minced garlic and cook for about 1 minute, stirring frequently, until fragrant and lightly golden.
04 - Add the peeled and deveined shrimp to the pan in a single layer. Season with salt, pepper, and crushed red pepper flakes if using. Sauté for 2 to 3 minutes, turning once halfway through, until the shrimp turn pink and become opaque throughout.
05 - Pour the fresh lemon juice over the shrimp and scatter in the chopped parsley. Toss everything together to coat evenly and remove the pan from heat.
06 - Arrange the rested steaks on serving plates and spoon the garlic butter shrimp over the top. Garnish with additional chopped parsley and lemon wedges on the side.