Crock pot beef barley soup is made with tender beef stew meat, chewy barley, fresh celery, chopped onions, medium carrots, and other nutritious veggies with seasoning and fresh herbs.
In a large skillet with some cooking oil, brown the mushrooms until they become golden brown.
Set aside. In the same skillet, add more oil and sear the beef chunks over medium-high heat. About 2 minutes per side.