In a large skillet over medium-high heat, melt the butter with the olive oil.
Add the garlic and red pepper flakes; sauté for 30 seconds until fragrant.
Add the shrimp in a single layer and season with salt and pepper.
Cook for about 1–2 minutes per side, or until the shrimp turn pink and opaque.
Pour in the white wine (or chicken broth) and lemon juice. Simmer for 2–3 minutes to reduce slightly.
Stir in chopped parsley and adjust seasoning as needed.
Serve immediately over pasta or with warm crusty bread.