Mix all filling ingredients together and set aside. Mix the dough ingredientsand add more flour little by little mixing until the dough is pliable. Dough should be thick enough to make a beautiful smooth ball. If flour sticks to your hands, add more water. Preheat a flat pan on medium heat, pan is hot enough when drops of water dance on pan. Make a ball of dough the size of a plum, mold it to resemble a little "bowl" Put 2 tablespoons of cheese mixture in the center of the "bowl" Close the dough carefully making sure all the cheese is covered Flatten with a tortilla press (can be purchased or improvise by using 2 plates!) Make sure pupusa is no thicker than ¼ in. Cook for 4 minutes each side. Remove and let cool on paper towels. Traditionally served with curtido