01 - Preheat grill to medium-high heat, approximately 400°F.
02 - Combine softened butter, minced garlic, chopped parsley, salt, and black pepper in a mixing bowl until smooth.
03 - Brush each ear of corn lightly with a portion of the garlic butter mixture.
04 - Cook the corn on the grill, turning occasionally, for 10 to 12 minutes, until kernels are tender and lightly charred.
05 - Remove corn from the grill and immediately brush with remaining garlic butter.
06 - Generously sprinkle grated Parmesan over each ear of hot corn so the cheese melts slightly.
07 - Serve immediately, garnished with extra parsley if desired.