This burger is so delicious, you will not miss the meat, promise! Here's a tip: If you don't want this patties to fall apart, you absolutely need to make a rough chop while processing, also try making thinner patties.
Peel the carrots, grate them coarsely and set them aside.
Peel and roughly chop the garlic.
Drain and rinse the chickpeas and put them into a food processor with the garlic, ground spices, salt and pepper. Slightly process to obtain a rough paste then add the carrot, egg, and flour and process briefly until evenly mixed but slightly rugged.
Heat the oil in a frying pan and divide the mixture into 8. Fry in batches for 2–3 minutes on each side, until golden, then drain on kitchen paper.
Keep opened chickpea can to cut round shapes in bread slices. Toast each slice in toaster or in frying pan.
Serve with slices of tomato and red onions and mayonnaise.