Melt butter in a Dutch oven over medium heat. Add onion and sugar; cover and cook 25 minutes or until golden brown, stirring frequently. Add mushrooms; cook 10 minutes or until browned, stirring frequently. Add barley; cook 2 minutes, stirring frequently. Remove from heat. Stir in soy sauce, salt, pepper, and thyme.
Preheat oven to 350°.
Bring broth to a boil in a medium saucepan. Pour broth over barley mixture; cover and bake at 350° for 1 hour or until barley is tender. Let stand 10 minutes. Garnish with thyme sprigs, if desired.
Everything you ever needed to know about designing, building and maintaining your very own wine cellar, complete with wine rack, wine coolers, and all kinds of storage and accesories! http://www.diamondsofwine.com