Pour the beans into a colander and rinse under cold water. Remove any pebbles or debris you might find. Pour the rinsed beans into the Instant Pot aluminum insert.
Add the drained and browned ground beef and the vegetables to the Instant Pot.
Add the salt, ground black pepper, dried bay leaves, and the seasoning pack that came with the beans to the Instant Pot.
Pour the beef broth into the Instant Pot and stir to combine. Place the lid on the Instant Pot. Set the valve to the sealing position.
After the steam has naturally released carefully open the lid of the pressure cooker away from your face to prevent a burn.
Stir the soup before serving. Serve a big bowl of this 15 Bean Soup with a bowl of crackers, Skillet Cornbread or crusty Italian bread.