Heat oven to 200C/fan 180C/gas 6. Using scissors, snip open the sausage skins and squeeze the meat into a bowl. Add the breadcrumbs, 2 tbsp chutney and the sage, then mix well with your hands. Divide the mix into 4, then shape into burgers, pushing the chunks of cheese into the middle of each patty. Make sure the cheese is completely sealed in or it will leak out during cooking.
Place the burgers on a baking tray, then cook for 25 mins until browned and cooked through to the middle. Split open the buns, stuff with your favourite salad, then top with a burger and some of the remaining chutney.