1 Place the beef, chilli, onion, garlic, salt and pepper in a bowl and mix well to combine.
2 Using slightly damp hands, shape the mixture into 4 patties. Heat a large non-stick frying pan over medium heat and cook the patties for 3 minutes each side or until cooked through. Top with the cheese and place on a baking tray under a preheated grill (broiler) for 3 minutes or until melted and golden.
3 To assemble, spread half of the slices with sour cream and relish, top with the beans, patties and rocket and sandwich with the remaining halves. Makes 4.