Soak the bun In hot water for about 5 minutes. Then squeeze it well to remove the water. Peel the onion, cut into small pieces and sauté in a little oil in a pan.
In a large bowl, combine the bun, fried onion, vegan ground meat, cornflour, breadcrumbs, parsley, mustard, and paprika and mix well with your hands. Season generously with salt and pepper.
Form small patties from the mixture with moistened hands.
Roll the patties in breadcrumbs before frying.
Heat the oil in a pan and fry the patties over medium-high heat until crispy, about 5 to 8 minutes per side. After frying, remove the oil from the pan.
Serve the patties with fresh parsley and mashed potatoes if you like, or in a burger bun with all the accompaniments.