Steam the diced onions in oil until translucent. Roughly dice tomatoes and add. Simmer for 5 - 10 minutes until the tomatoes are soft.
Add cumin, peanut butter (be sure to use the creamy version), sambal oelek, drained beans, finely sliced garlic and salt. Simmer for 3 minutes over low heat.
Rice or couscous tastes good with it.
Tips: I always use a wok for preparation and serve the dish with basmati rice. A little fresh coriander can be added to the stew as a little highlight when serving.