1 cup barley
1 can (14 1/2 oz) roasted garlic chicken broth (about 2 cups)
3 to 4 green onions, thinly sliced (about 1/2 cup)
4 to 6 ounces fresh or canned mushrooms, sliced
Salt or seasoned salt and pepper to taste
2 teaspoons butter

Combine all ingredients in slow cooker.
Cover and cook on low for 4 to 5 hours.