1 lg. onion, thinly sliced
3 lbs. cut up chicken
2 (6 oz.) cans tomato paste
4 oz. sliced mushrooms
1 tsp. salt
1 to 2 cloves garlic, minced
1 to 2 tsp. oregano
1/2 tsp. celery seed
1 bay leaf
1/2 c. water

Place onions in bottom of crock pot. Add chicken pieces. Stir together remaining ingredients. Pour over chicken. Cook on low 7 to 9 hours; high 3 to 4 hours. Serve over spaghetti.