1. Heat the butter in a skillet over medium heat, then add the garlic and cook over medium heat for 2 minutes, being careful not to burn.
2. In the same skillet, add the shrimp, mix and cook for 5 to 7 minutes. Add the parsley, season with salt and pepper and mix until everything is integrated. Finally, add the juice of half a lemon.
3. Serve in a deep bowl and decorate with parsley leaves and lemon slices.