Step 1

Heat a grill for direct-heat grilling, or heat a grill pan over high heat on the stove. While the grill is heating, in a medium mixing bowl, combine the mayonnaise, sour cream, cashew parmesan, chili powder, garlic, and cilantro. Stir until completely combined.

Step 2

Place the corn directly on the hot grill and cook, rotating occasionally, until cooked through and charred in spots on all sides, about 8 minutes total.

Step 3

Remove the corn from the grill and transfer to a serving plate. Use a pastry or basting brush to generously coat each ear of corn with the mayonnaise mixture. Sprinkle with extra cheese and chili powder and serve immediately with lime wedges.