This vegetarian casserole will please a crowd with its high fiber and flavor.
Preheat oven to 350F degrees.
In a large non-stick pan, heat oil over medium-high heat. Add onion, celery, and green pepper. Cook for 10 minutes or until vegetables soften.
Stir in tomatoes, kidney beans, cannellini beans, barley, parsley, salt, Italian seasoning, and cumin.
Transfer mixture to a 2-to 3 quart casserole that has been sprayed with non-stick cooking spray.
Add boiling water. Cover. Bake at 350 degrees for 1-1/2 hours or until barley is tender and liquid is absorbed.