In a medium sized bowl mash the black beans with a fork or a potato masher, leaving slightly chunky.
Cut the avocados in half and remove the pits. Scoop out the avocado flesh and add to the bowl of black beans.
Begin to mash the avocado into the black beans, again leaving slightly chunky.
Add the lemon juice and mix into the black beans mixture using a spoon.
Serve immediately or cover and refrigerate. Serve as a spread on sandwiches or as a dip with pita chips and veggies.