Step 1

Preheat oven to 450˚F.

Step 2

Lightly butter one side of each slice of bread.

Step 3

Arrange bread slices, buttered side down, on a large baking sheet.

Step 4

In a small bowl combine mayonnaise and dijon mustard; mix until incorporated.

Step 5

Spread the mayo mixture over bread. Add more, if you like.

Step 6

Place 2 slices of cheese on each slice of bread.

Step 7

Sandwich the breads together - you should have 4 sandwiches.

Step 8

Pop them in the oven for 4 minutes; flip and continue to cook for 3 to 4 more minutes, or until golden brown and cheese is melty.

Step 9

Remove from oven and transfer to a cutting board.

Step 10

Cut each sandwich in half and serve.