Sauté the onion cubes in the oil in a small saucepan.
Roast some paprika briefly and deglaze with the tomatoes.
Then add the beans and a little salt and sugar and simmer for about 15 minutes.
At the end, season again with sugar, salt and the paprika and enjoy!
Notes
Fresh, crusty bread goes best with it.Well covered and in the refrigerator, the beans will keep for a few days if they haven't been completely consumed within a meal.