Turn a skillet on medium high heat. Spray one side of bread with cooking spray and place on the pan. Top with 1/2 cup of cheese and let cook until cheese melts. Once cheese melts place the basil leaves on top, followed by the tomato. Then sprinkle on the other 1/4 cup of cheese followed by the other piece of bread. Spray that side with cooking spray and flip the sandwich. Cook until bread is browned and cheese is melted. Enjoy!