Begin by rinsing the fresh shrimp under cold water to remove any residual grit. Shell and devein the shrimp, then pat them dry with paper towels.

In a medium bowl, melt the butter and allow it to cool slightly. Add the minced garlic, grated Parmesan cheese, black pepper, and optional red pepper flakes. Stir until fully combined.

Add the prepared shrimp to the marinade, ensuring each piece is thoroughly coated. Mix gently with a spatula or your hands.

Preheat your oven to 400°F (200°C) and line a baking tray with parchment paper.

Spread the marinated shrimp evenly on the baking tray, leaving space between each piece.

Bake the shrimp for 10 to 12 minutes until you see a vibrant pink color and a golden-brown Parmesan crust.