Add onion and garlic, olive oil to the pan and stir for 10 mins or so until the onion is translucent but not browned.
Add the tomato puree, tamarind brown sauce and cook for a further two minutes
Darin and rinse the beans and add to the pan. Stir to cover them in the sauce
Pour the passata in to the pan and simmer to thicken and reduce
Brush the bread with olive oil and griddle for 2 mins on each side.
Pour the beans on top of the toast, and enojy!