Mushroom Barley Casserole

1 cup medium pearl barley
1 small onion, chopped
1/4 cup butter
1-1/2 cups sliced fresh mushrooms
1 cup slivered almonds, toasted
1 envelope onion soup mix
2 tablespoons minced fresh parsley or 2 teaspoons dried parsley flakes
3 to 3-1/2 cups chicken broth

In a small skillet, saute barley and onion in butter for 5 minutes or until onion is tender. Transfer to an ungreased 2-qt. baking dish. Stir in the mushrooms, almonds, soup mix and parsley. Add 3 cups broth.
Bake, uncovered, at 350° for 1-1/4 hours or until barley is tender, adding more broth if needed.

I used homemade onion soup mix instead. Really good.