1. Butter each bread slice on one side only.

2. Place a slice of Gouda on the unbuttered side of one bread slice.

3. Cover with a slice of ham, then add another slice of Gouda on top.

4. Top with a second slice of bread, buttered side facing upwards.

5. Prepare the remaining sandwiches in the same way.

6. Heat a non-stick frying pan over medium heat, or heat a sandwich press. Add the sandwiches and press down with a spatula. Toast over medium heat for a few minutes. Carefully turn each sandwich to toast the other side.

7. Cut the finished sandwiches into triangles and serve immediately.