You can use smaller or larger cans of beans. It's important that all four are the same size. A jar of diced jalapenos is just easier than dicing around
Open 2 cans of black beans and 2 cans of ranch style beans
Dump both cans of black beans but only one can of ranch style beans into a strainer. Leave the other can of Ranch Style beans on the counter with its juice intact.
Toss and rinse under cold water.
Dump the drained beans into a food processor
Empty the other can of Ranch Style beans (with juice) on top.
You weren't expecting a pretty side dish, were you? C'mon, they're beans!
Move them to a bowl and add the jalapeños. Get to folding. Or stirring… It's beans and jalapeños, it's not like you're going to hurt anything.
That's it! Hot or cold, they're ready to eat.