Heat a grill over medium heat. Toss the cut potatoes with 1 T olive oil and season with salt and pepper. Transfer to a grilling basket and grill until tender (about 25 minutes), turning or tossing once or twice throughout cooking.

Shuck the corn and add to the grill, turning until all sides are appropriately cooked and slightly charred. Remove from the grill and cut the kernels off the cob.

In a large bowl, whisk together the mayonnaise, sour cream, lime juice, lime zest, mustard and honey. Add the warm potatoes, corn, and green onions and toss to coat. Serve.