Drain the beans on a sieve. Put the tomatoes on a sieve and collect the juice. Cut the tomatoes into pieces. Peel and chop the onions. Wash the thyme and pluck the leaves from the stems.
Wash the chilli pod, cut lengthwise, remove the seeds and cut the pod into rings. Heat the oil in a pot. Sauté the minced meat in it, fry the onions briefly and season with salt and thyme (up to a teaspoon).
Add beans, chilli, tomatoes and juice, bring to the boil and simmer for 5-10 minutes. Season to taste with salt and pepper and serve sprinkled with remaining thyme.