Step 1

Heat the grill to 400°F.

Step 2

Grill the ears of corn until slightly charred and tender, about 12 minutes, turning occasionally.

Step 3

While the corn is cooking, stir together the mayonnaise, sour cream, lime juice, and zest in a small bowl.

Step 4

Using a brush, slather the mayonnaise mixture all over the grilled corn. Sprinkle with cheese and chili powder and garnish with chopped cilantro. Serve immediately with lime wedges on the side.