A hot dog. Let the cheese warm to room temp, then toast the bun. Once your Weiner and Buns are both ready put the cheese inside the bun under the dog and it should melt nicely. Add whatever your hot dog toppings of choice are.
Also literally any kind of sandwich that cheese is good on is another safe bet. Also grilled cheese.
You just gonna gloss over the whistle dog? C'mon now.
Take two fingers of cheese and nestle a fried or boiled weiner betwixt. Wrap that thoroughly in long strips of lightly cooked peppered bacon, and poke some toothpicks through to hold it all together. Broil in the oven until the cheese starts to get melty. Bonus points if you get some sear on the bacon before all the cheese escapes. Put that on a toasted bun with garlic butter.
Remember to remove the toothpicks. Serve with salsa fries or poutine.