Mushroom barley soup made in an instant pot is the perfect soup for a cold day. It's made with fresh and wholesome ingredients, and it can be on your table in less than an hour even though it tastes like it's been simmering all day long!
Be sure to make a double batch of this soup. It's easy to store in the refrigerator for a few days or in the freezer for up to three months. It freezes well and reheats well!