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French Onion Chicken Casserole

French Onion Chicken Casserole is a delicious mix caramelized onions, juicy chicken, green beans, Swiss cheese, and buttermilk biscuits.
4.86 from 7 votes
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Course: Chicken
Cuisine: American
Prep Time: 10 minutes
Cook Time: 40 minutes
Total Time: 10 minutes
Servings: 6 servings
Author: Jennifer Stewart

Equipment

  • Plastic Mixing Bowls with Lids - 12 Piece Nesting Bowls Set
  • 9 x 13 Baking Dish Ceramic Casserole Dish, White

Ingredients

  • 4 cups cooked chicken diced or shredded
  • 1/2 cup mayonnaise
  • 1/3 cup sour cream
  • 1/4 cup heavy cream
  • 2 tablespoons beef bouillon granules
  • 1 teaspoon salt
  • 1 teaspoon black pepper
  • 1 teaspoon rubbed sage
  • 1/2 teaspoon garlic powder
  • 1.5 cups french cut green beans
  • 1.5 cups caramelized onions
  • 8 slices Swiss cheese
  • 1 16 ounce can Grands buttermilk biscuits
  • 2 tablespoons butter melted

Instructions

  • Preheat oven to 350F. Prepare a 9x13 casserole dish with cooking spray.
  • In a large mixing bowl, combine the cooked chicken, mayo, sour cream, heavy cream, bouillon, salt, pepper, and sage.
  • Toss to combine thoroughly.
  • Spread the mixture in an even layer in the prepared baking dish.
  • Bake at 350F for 30 minutes.
  • Carefully remove from the oven, Top with sliced cheese, making sure to cover the whole top of the casserole.
  • Cut the biscuits into quarters. Spread the biscuit quarters over the cheese, covering as much as possible.
  • Brush with melted butter.
  • Return to the oven and bake for 20 minutes or until the biscuits are golden brown and the internal temperature of the dish as reached 165F.
  • Remove and serve warm!

Notes

  • Use cooking spray to avoid sticking and easy cleanup.
  • Make a super easy version using cream of chicken soup!
  • Lunch for tomorrow? Add a small tablespoon butter to the top of the biscuit to refresh that warm flavor.
  • Leftover French onion chicken will be happy in an airtight container for up to five days or in the casserole dish with plastic wrap for up to four days.
  • Prep ahead and it is perfect for a busy night.
  • Leave off the biscuits and use cooked egg noodles or delicious french fried onions.
  • Make and freeze in advance for up to two months to have a quick dinner ready to bake!
    • This recipe first appeared on Savory Experiments.

    Nutrition

    Serving: 1 | Calories: 702kcal | Carbohydrates: 18g | Protein: 35g | Fat: 54g | Saturated Fat: 22g | Polyunsaturated Fat: 28g | Trans Fat: 1g | Cholesterol: 168mg | Sodium: 1422mg | Fiber: 2g | Sugar: 5g