Grilled Cheese

Bahan-bahan (1 porsi)

• 2 ½ -thick slices good quality bread, (such as a tight-crumbed Italian or whole grain bread, with no holes)
• 1 to 2 tablespoons softened butter or mayonnaise, (best quality such as Hellmann's or Duke's, as needed (see note))
• 2 slices of medium or sharp cheddar cheese ((about 2 oz))
• 1 oz (½ cup) shredded Gruyère cheese