Preheat oven to 350°F. Place green beans in boiling water in 4- to 6-quart Dutch oven; cook on medium heat 4 to 6 minutes or until tender-crisp. Rinse under cold water; drain well.
Cook bacon in same pan on medium heat until crisp. Remove bacon; drain on paper towels. Discard all but 2 tablespoons of the drippings from pan. Add celery, onion and bell pepper; cook and stir 5 minutes or until tender. Add soup, milk and 1 teaspoon of the Seasoning; cook and stir 2 minutes or until well blended and heated through. Add green beans and 1/2 of the bacon; toss gently to coat. Spoon into 13x9-inch baking dish.
Bake 15 minutes. Remove from oven. Stir carefully to blend. Sprinkle with fried onions, remaining bacon and 1 teaspoon Seasoning. Bake 10 to 15 minutes longer or until heated through and top is lightly browned.