Add butter or margarine to large saucepan and let it melt. Saute the chopped onions, diced carrots and garlic.
Once onions become opaque, add in the sliced and/or chopped mushrooms. Saute for 2-3 minutes.
Add water and broth and bring to a boil. Add the pearled barley, dill, parsley, salt and pepper. (Add cooked chicken or turkey here if you wish!).
Reduce heat so the soup cooks at a rolling boil. Cook for 45 minutes, or until barley has cooked through.
(Note: I used pearled barley, not quick cooking barley. Follow time directions on package if using quick cook barley!)
Warm rolls as directed on package and serve with butter and jam.
Serve Mushroom Barley Soup with Rolls and Jam.