- Heat 2 tablespoons of butter in a large skillet set over medium-high heat. Add shrimps and season them with salt and pepper. Sauté the shrimp until pink, about 1-2 minutes per side. Transfer the cooked shrimp to a clean bowl and set aside. - 1½ pounds shrimp, Kosher salt, Ground black pepper 
- Reduce heat to medium-low and melt the remaining 2 tablespoons of butter in the same skillet. Sauté the onions until softened, about 3-4 minutes. Add the garlic and red pepper flakes and sauté until fragrant, about 30 seconds. - ½ cup diced yellow onion, 6 cloves garlic, ½ teaspoon crushed red pepper flakes 
- Pour the white wine into the skillet and deglaze the pan. Bring the mixture to a simmer and allow the liquid to reduce by half, about 10-15 minutes. - ⅔ cup dry white wine 
- Stir in the cream and bring the mixture to a simmer, stirring occasionally. - 1½ cups heavy cream 
- Stir in the Parmesan cheese and bring the sauce to a simmer for 1-2 minutes, until the cheese melts and the sauce thickens. Taste and season with salt and pepper, if needed. - 1 cup grated Parmesan cheese 
- Return the shrimp to the skillet and simmer until warmed through, about 2-3 minutes. Sprinkle with fresh parsley and serve with lemon wedges over pasta or rice. - Chopped fresh parsley and lemon wedges, Cooked pasta or rice