• 18 slices bread
  • 9 slices Cheddar cheese
  • 4 tablespoons butter

Directions

Preheat oven to 450 degrees F (230 degrees C).
Butter one side of 9 slices of bread, and place butter-side down on a baking sheet. Arrange cheese on each slice of bread. Spread butter on 9 remaining slices of bread, and place them buttered-side up on top of the cheese.
Bake in preheated oven for 2 to 3 minutes. Flip the sandwiches, and bake an additional 2 to 3 minutes, or until golden brown.

I also only set the oven for 400 degrees, put the rack on the bottom position and baked for about 8 min on the first side and only 6 mins after flipping.
Two slices of American cheese was my choice for the sandwiches this time, but looking forward to adding other goodies such as tomato, ham, or even trying a tuna melt.

I used two slices of cheese and baked both sides at 425 for 6 minutes and they were wonderful!