Empty rinse and clean both cans of black beans. Using a potato masher or something similar, mash only half of the black beans, leaving the other half whole.( this allows for texture)

Finley dice the whole onion and half the mushrooms. Chop the whole green pepper and the remaining mushrooms. ( this allows for texture)

Combine all the ingredients together in a large bowl, cover with plastic wrap and let set in fridge.