Preheat the grill to 375°F. Pull husks off of corn.
Place corn on preheated grill for 12-15 minutes, turning while cooking. Brush with butter while cooking. When corn is grilled to preference, remove from heat.
Using a sauce brush, brush the corn with mayonnaise. Sprinkle with cojita cheese, chili powder, and cilantro. Add salt and pepper to taste. Serve hot.
Notes
If you can't find cojita cheese, feta makes a good substitute.Serve the corn hot. Once it comes off the grill, make sure you have the ingredients ready to start coating it.