This can also be made on the stove top. Use a dutch oven to brown the beef and cook the onions. Return everything to the dutch oven and add the remaining ingredients including the barley. Cook until barley chewy, tender – about 20 minutes. Pressure cooker (Instant pot) method: Turn the pressure cooker to the Sear setting. Cook the beef in the pressure cooker. Remove the beef and add in the onion. As you’re chopping the carrots and celery, add it in to the pot. Add in the remaining ingredients as like above, leaving out the frozen peas, corn and 4 cups of beef broth. Turn the pressure cooker to the Pressure Cook setting. Cook for 15 minutes. It took 15 minutes to come to pressure and 15 minutes to steam release, even using the quick release switch. Once the lid releases, stir in the frozen vegetables and remaining beef broth. Close the lid and allow to sit for 5 minutes. Remove the bay leaf before serving.