You should only do this if you really got no choice as hairdryers can blow dust onto your sandwich.
Otherwise, use the iron or the coffeemaker.
What you need:
1) Hair Dryer
2) Cheese
3) Bread
4) Plate
5) Butter
Steps:
1) Spread butter on one side of each piece of bread
2) Place one slice of the bread, buttered side up, on the plate
3) Place cheese on the piece of bread, you can add as much cheese as you want but it will also take a longer time to prepare
4) Add anything else that you would like to put in your sandwich. These include include ham, tomato slices, or other items that do not need to be thoroughly cooked and will not be damaged by mild heat.
5) Cover the sandwich with the second piece of bread, placing the buttered side down on top of the contents of the sandwich
6) Turn on hair dryer to the highest setting. Hold the hair dryer about 25-30cm away from the sandwich depending on the intensity of the hair dryer
7) Heat the sandwich until the cheese melts and change the placing of your hairdryer every few minutes to ensure a nice, even amount of cooking throughout the sandwich
8) Enjoy once your cheese melts completely
