I use cannellini beans when I make tacos.

I cook up a tin of tomatoes with chilli powder, cumin, garlic, dash of raw sugar, dash of salt then add the beans. Heat through, then mash the lot with a potato masher. We fill our tacos with the bean mixture, english spinach or cos lettuce, grated carrot, diced cucumber, diced capsicum, sunflower sprouts, mashed avocado (and hot chilli sauce for the adults).