These Hasselback potatoes have been pretty popular across food blogs for some time now. We couldn't resist the opportunity to cook them on the grill and add a couple of our own personal touches in the process. If you're new to the idea, the Hasselback potato is a potato that has been cut into vertical slices, though not all the way through so that the potato holds together while it bakes. We're adding two different cheeses, butter, cream and more for that scalloped potato flavor that we all love!