01 - Remove steaks from the refrigerator 30 minutes before cooking to bring them closer to room temperature. Pat the steaks thoroughly dry with paper towels. Brush both sides with olive oil and season evenly with kosher salt and freshly ground black pepper.
02 - Heat a large skillet or grill pan over high heat until smoking. Carefully place the steaks in the pan and sear 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 are pink, opaque, and curled.
05 - Remove the pan from heat. Add the fresh lemon juice and chopped parsley, then toss the shrimp to coat evenly in the garlic butter sauce.
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.