01 - Set grill to medium-high heat (400°F).
02 - In a mixing bowl, combine softened butter, minced garlic, chopped parsley, salt, and black pepper until homogeneous.
03 - Brush each ear of corn lightly with a portion of the garlic butter mixture.
04 - Place corn on the grill. Cook, turning occasionally, for 10 to 12 minutes, until kernels are tender and lightly charred.
05 - Remove corn from grill. Immediately brush remaining garlic butter over the hot corn.
06 - Sprinkle freshly grated Parmesan generously over each ear while still hot to allow cheese to melt slightly.
07 - Serve immediately, garnishing with additional parsley if desired.