Step 1

In a small bowl, whisk together the sour cream, mayonnaise, Parmesan cheese, lime juice, chili powder, garlic powder, cumin and ancho chile powder.

Step 2

Rub the corn with olive oil, then sprinkle with salt and pepper

Step 3

Clean, oil and preheat the grill to medium- high. Place the corn on the grill, close the lid if using one and cook, turning frequently until lightly charred and softened, about 10 minutes.

Step 4

Remove the corn from the grill and let cool slightly. Generously brush with the sour cream mixture, sprinkle with more Parmesan, and serve immediately.