Soak the toast in cold water. Peel onions. Chop 1 onion finely. Knead minced onion, diced onion, mustard, expressed toast and egg. Season with salt and pepper and form 4 large meatballs. Heat the oil in a large pan and fry the meatballs for 8-10 minutes, turning them over
Clean, wash and drain the rocket well. Cut cheese into thin slices. Cut the bread roll horizontally. Spread the lower halves of the rolls with 1 tsp. chutney each and spread rocket on top. Place burgers on top and cover with cheese and onion rings. Finally, place 1 teaspoon of chutney on each roll and cover with the top of the roll