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French Onion Chicken Casserole


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  • Author: Julia
  • Total Time: 45 minutes
  • Yield: 8 servings
  • Diet: Gluten Free

Description

French Onion Chicken Casserole is a creamy, comforting dish made with tender chicken, rotini pasta, green beans, and a rich homemade sauce. Topped with crispy fried onions, this easy, family-friendly meal is perfect for busy weeknights or meal prep. No canned soup needed—just fresh ingredients and big flavor!


Ingredients

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

Instructions

  • Cook the pasta: Boil pasta according to package directions, drain, and set aside.
  • Prepare the sauce: Heat chicken broth and ½ cup milk until boiling. In a bowl, whisk flour with remaining 1 cup milk, then slowly stir into the saucepan. Cook until thickened.
  • Add flavor: Stir in sour cream and onion soup mix until well combined.
  • Assemble the casserole: Mix cooked chicken, pasta, green beans, and sauce in a large bowl.
  • Bake: Pour into a baking dish, cover with foil, and bake at 350°F for 25-30 minutes.
  • Add topping: Remove foil, sprinkle crispy fried onions, and bake uncovered for 5-7 minutes until golden and bubbly.

Notes

  • Store leftovers in an airtight container in the fridge for up to 4 days.
  • For a make-ahead option, assemble and refrigerate up to 24 hours before baking.
  • Freeze without the fried onions for up to 3 months.
  • Prep Time: 10 minutes
  • Cook Time: 35 minutes
  • Category: Main Course
  • Method: Baking
  • Cuisine: American