Chicken and Dumpling Casserole

1/2 cup chopped onion
1/2 cup chopped celery
2 garlic cloves, minced
1/4 cup butter or margarine
1/2 cup all-purpose flour
2 teaspoons granulated sugar
1 teaspoon salt
1 teaspoon dried basil
1/2 teaspoon pepper
4 cups chicken broth
1 (10 ounce) package frozen green peas
4 cups cubed cooked chicken

Dumplings:
2 cups buttermilk biscuit mix
2 teaspoons dried basil
2/3 cup milk

In large pan, saute onion, celery and garlic in butter until tender. Add flour, sugar, salt, basil, pepper and broth; bring to a boil. Cook and stir for 1 minute; reduce heat. Add peas and cook for 5 minutes, stirring constantly.

Stir in chicken. Pour into greased 13 x 9 x 2 inch baking dish.

Dumplings: Combine biscuit mix and basil in a bowl. Stir in milk with a fork until moistened. Drop by tablespoonsful onto casserole (12 dumplings). Bake uncovered at 350 degrees F for 30 minutes. Cover and bake 10 minutes more or until dumplings are done.