French Onion Chicken Casserole
Delicious French Onion Chicken Casserole with caramelized onions and melty cheese.
Equipment
- baking dish
- skillet
- medium bowl
Ingredients
Onion Mixture
- 2.5 cups thinly sliced sweet onion (1 large)
- ¼ cup butter
- 2 cloves garlic minced
- 1 pkg. French fried onions (2.8-oz.)
Casserole Filling
- 1 purchased rotisserie chicken
- 1 container sour cream (8-oz.)
- 2 Tbsp. chopped fresh Italian parsley
- ¼ cup all-purpose flour
- ½ tsp. kosher salt
- ½ tsp. ground black pepper
- 1 can reduced-sodium chicken broth (14.5-oz.)
- 1 cup frozen sweet peas
- 4 oz. Gruyere cheese shredded (1 cup)
Instructions
Preparation
- Preheat oven to 350°F. Grease a 2- to 2 ½-qt. baking dish.
- In an extra-large skillet, heat butter over medium. Add onion and garlic, toss to combine. Reduce heat to medium-low; cover and cook 13 minutes or until tender, stirring occasionally. Uncover skillet and increase heat to medium high. Cook 3 to 5 minutes or until golden brown.
- Meanwhile, remove and chop meat from the chicken. You should have 3 ½ to 4 cups. In a medium bowl, combine chicken, sour cream, and parsley; set aside.
- Sprinkle onion mixture with flour, salt, and pepper. Cook and stir over medium 1 minute. Add broth; cook and stir until thickened and bubbly. Stir in peas.
- Add onion mixture to the chicken mixture, stir to combine. Transfer to prepared dish. Top with cheese and French-fried onions.
- Bake until bubbly at the edges, about 30 minutes.
Notes
If you have leftovers, store them in an airtight container in the fridge for 3-4 days. You can make this casserole up to 1 month ahead and freeze it. Leave off the onions and cheese. Thaw the casserole completely in the fridge overnight and top with the cheese and onions before baking.
Nutrition
Serving: 1servingCalories: 300kcalCarbohydrates: 16gProtein: 13gFat: 21gSaturated Fat: 10gCholesterol: 70mgSodium: 477mgPotassium: 290mgFiber: 2gSugar: 5gVitamin C: 7mgCalcium: 205mgIron: 1mg
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