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French Onion Chicken Casserole

My French Onion Chicken Casserole is creamy and delicious and topped with crispy, crunchy fried onion strips. It's the perfect weeknight meal for when you're really craving delicious comfort food!
Prep Time10 mins
Cook Time45 mins
Total Time55 mins
Servings: 8 servings
Author: Kristin Maxwell


  • 2 ½ cups chicken broth
  • ¾ cup all-purpose flour
  • 1 ½ cups milk
  • 1 cup sour cream
  • 1 packet onion soup mix
  • 3 cups diced chicken
  • 2 15- ounce cans green beans drained (or 2 ½ cups fresh or frozen)
  • 12 ounces uncooked rotini
  • 2 cups french fried onions


  • Preheat oven to 350 degrees F.
  • Bring a pot of salted water to boil over medium-high heat. Add the pasta and cook to package directions. Drain and set aside.
  • Meanwhile, in a medium saucepan over medium heat, bring chicken broth and half a cup of milk to a simmer. While the broth is coming to a simmer, whisk together flour and remaining 1 cup of milk in a small bowl until thick and smooth. Pour into the saucepan with the broth and continue whisking over low heat while it simmers. Continue to whisk until thickened; about 5 minutes. Remove from heat.
  • In a large bowl, combine thickened chicken broth mixture, sour cream and onion soup mix until well mixed. Add chicken, noodles and green beans and stir to coat completely. Pour into a large baking dish. Cover with foil and bake for 25-30 minutes.
  • Uncover and top with the french fried onions; bake for an additional 5-7 minutes or until onions are crispy and golden brown.
  • Cool for several minutes. Garnish with fresh minced parsley if desired.