Place a frying pan over a medium heat, add a dash of olive oil and fry the sausage slices with a little salt and pepper until cooked through and lightly coloured on the outside. Remove and slice on the diagonal, then place in a bowl
Add the garlic to the pan and fry for 30 seconds, then add the parsley and capers and heat for another 30 seconds. Mix with the sausages
Preheat the grill
Slice the very top off each croissant to create a lid. Fry the cut sides in the hot pan until golden. Gently push down the inside of the croissants to create a hollow, then fill with the sausage mixture. Top with the slices of cheese and season with salt and pepper.
Place the filled croissants (without the lids) on a baking sheet and put under the hot grill for 1–2 minutes, until the cheese has melted. Place the lids on top and serve.
