01 - Heat grill to medium-high (approximately 400°F).
02 - In a small bowl, thoroughly combine softened butter, minced garlic, parsley (if using), salt, and pepper until smooth.
03 - Brush ears of corn lightly with a portion of the prepared garlic butter.
04 - Place corn directly on grill grates and cook, turning occasionally with tongs, for 10 to 12 minutes or until kernels are tender and lightly charred.
05 - Remove corn from grill and immediately brush evenly with the remaining garlic butter mixture while still hot.
06 - Garnish each ear of corn generously with grated Parmesan cheese so it begins to melt.
07 - Serve immediately, adding extra chopped parsley if desired.