It all depends how she will take/like them. I would try whatever the regular local dishes are if beans are common. Otherwise just make sure they are well soaked/cooked (scum removed regularly from cooking water for something like black eyed beans) etc following safety guidelines for cooking beans (I am not a fan of cooking them, I buy canned!!) and try them as finger food.
Otherwise, mine like bean burgers, just any bean, mashed and made into a fritter (some flour and egg to bind is handy), you can season as you see fit (salt is not good at this age but many other spices can be used to add flavour or a dollop of tomato puree). You can also mix in left over veg chopped finely or mashed up to make little bean and vegi burgers. Anything like this is nice served with a yoghurt and mint dip, or again whatever is local. Sorry I have no idea what people eat in Brazil - I am very ignorant! (I'm thinking tacos and burritos but I could be WELL off course!)
Mine likes beans cooked in a stew or curry rather than plain (but will eat them plain) as they take on the flavour from the other ingredients, meat or stock or veg, spices etc.
You can also make lovely bean dips, humus from chick peas and I don't know the name but red kidney bean dip, both lovely served with bread, tortilla wraps, pitta bread etc...or mine likes to eat it with a spoon!
Lentils are great too. Again fritters, burgers, in a curry or stew.
A lazy meal here is a can of baked beans in tom sauce, not super for a 7 month old because of the salt levels, and anyway I'm sure the local recipes are much nicer! I would leave salt totally out of any recipe you use for now.
hope this helps a little. Beans are so super nutritious.
