Melt 1 tbsp. butter in a large enough skillet.
Put the tortilla in the pan.
Put 1 tbsp. butter on top of the tortilla, and spread it.
Cook on low-medium heat for up to five minutes.
Put grated cheese on one side of the tortilla.
Time to add the fillings, if you have any. Keep in mind that some fillings, like chicken or beef, need to be cooked before being added.
Once the cheese has started to melt, carefully fold the tortilla.
Using your spatula, flip the tortilla every once in a while, to make sure both sides are evenly heated.
Once both sides turn brown, remove from the heat.
Serve with a dip of your preference.