To prepare a mini welsh beef burgers stuffed creamy gorgonzola and topped caramelised onions recipe, you will need: 1 lb (240 g) ground sirloin, 2 tbsp melted sage, 1/4 cup (60 ml) mayonnaise, 1 chopped chives, 1/2 teaspoon thyme, salt and pepper to taste. Preheat the grill to medium-high heat. Place the patty on the hot grill and cook until browned on both sides, about 5 minutes. Remove from the heat and allow to rest for 10 minutes before serving.