01 - Pat shrimp dry with paper towels and season with ¼ teaspoon each of salt and pepper.
02 - Heat a large skillet over medium-high heat. Add olive oil and 2 tablespoons of butter.
03 - Once butter is melted and foaming, add shrimp in a single layer. Cook 2–3 minutes per side, until just pink and curled. Remove shrimp to a plate.
04 - Reduce heat to medium. Add remaining 1 tablespoon butter and minced garlic to skillet. Cook, stirring constantly, about 1 minute until fragrant.
05 - Add red pepper flakes (if using) and return shrimp to the skillet. Toss to coat in garlic butter.
06 - Sprinkle Parmesan evenly over the shrimp and let melt for 1 minute.
07 - Remove from heat. Drizzle with lemon juice and top with fresh parsley. Serve immediately, garnished with extra Parmesan and lemon wedges as desired.