01 - Press a small heart-shaped cookie cutter through each bread slice to extract two heart cutouts per slice, yielding 12 bread hearts total. Repeat the process with cheese slices to create 12 matching cheese hearts.
02 - Layer one cheese heart between two bread hearts, pressing gently to adhere the components.
03 - Apply a thin, even coating of softened butter across the outer surface of each assembled sandwich.
04 - Warm a nonstick skillet over medium heat. Arrange sandwiches buttered side down in the pan and cook for 2 to 3 minutes until reaching golden brown coloration. Turn each sandwich and continue cooking the opposite side for 2 to 3 additional minutes until the cheese completely melts and bread achieves crisp texture.
05 - Transfer to a serving plate and present while warm.