Too cook the short ribs in an Instant Pot: Close the lid and choose the manual high pressure function set to high. Cook the short ribs for 45 minutes, followed by a 10 – 15 minute natural release.
To cook the short ribs in a slow cooker: Cover with the lid and cook the short ribs until the meat is so tender it’s falling off the bone, about 4-5 hours on high or 7-8 on low.
To cook the short ribs in the oven: Preheat oven to 325 degrees F (162 degrees C). Cook in covered pot or baking dish for 3-4 hours, until the meat is so tender it's falling off the bone.