Description
This comforting Chicken Casserole Recipe, also known as Chicken Gloria, features tender chicken breasts sautéed and then baked in a creamy mushroom and onion sauce. Perfect for a hearty family dinner, it’s easy to prepare and serves well over mashed potatoes, pasta, or rice.
Ingredients
Scale
Chicken
- 2 1/2 lbs chicken breasts (4 to 5 large), cut into 1-inch thick strips
- 1 1/2 tsp sea salt (plus more to taste)
- 1/4 tsp black pepper (plus more to taste)
- 1 cup all-purpose flour (to coat the chicken)
- 6 Tbsp olive oil (divided)
Mushrooms and Vegetables
- 1 lb white mushrooms, thickly sliced
- 1 medium onion, finely diced
- 3 garlic cloves, minced
Sauce
- 3 Tbsp unsalted butter
- 3 Tbsp all-purpose flour (for the sauce)
- 1 1/2 cups chicken broth
- 1 Tbsp lemon juice
- 1 cup half and half (or 1/2 cup milk + 1/2 cup heavy cream)
Instructions
- Season and Dredge Chicken: Season the chicken strips with sea salt and black pepper. Coat both sides with all-purpose flour evenly.
- Sauté Chicken: Heat 3 tablespoons of olive oil in a large skillet over medium-high heat. Once hot, add chicken strips in batches—do not overcrowd the pan—and sauté until golden brown on the outside. The chicken does not need to be fully cooked at this stage. Transfer browned chicken to a 13×9 inch casserole baking dish.
- Cook Mushrooms and Onions: To the same skillet, add the remaining 3 tablespoons of olive oil. Add the thickly sliced mushrooms and diced onions and sauté until softened and golden. Add minced garlic and cook for another 1-2 minutes until fragrant. Spread this mixture evenly over the chicken in the baking dish.
- Prepare the Sauce: In a medium saucepan or the same skillet, melt unsalted butter over medium heat. Whisk in 3 tablespoons of flour and cook for 1-2 minutes until lightly golden to form a roux. Gradually whisk in chicken broth, lemon juice, and 1/4 teaspoon black pepper until smooth.
- Add Dairy and Simmer: Stir in half and half and bring the sauce to a gentle simmer. Season generously with salt and additional pepper to taste. Remove from heat.
- Assemble and Bake: Pour the creamy sauce evenly over the chicken and mushroom mixture in the casserole dish. Cover the dish tightly with aluminum foil and bake in a preheated oven at 350°F (175°C) for 45 minutes.
- Serve: Once baking is complete, serve the Chicken Gloria warm or hot over mashed potatoes, pasta, or rice for a satisfying meal.
Notes
- The chicken in this casserole is incredibly tender and flavorful—each bite is delightful.
- This dish reheats very well, making it perfect for leftovers.
- Make sure not to overcrowd the pan when sautéing chicken to ensure a nice golden crust.
- Covering the casserole during baking helps keep the chicken moist and tender.
Nutrition
- Serving Size: 1 serving
- Calories: 340 kcal
- Sugar: 1 g
- Sodium: 155 mg
- Fat: 18 g
- Saturated Fat: 5 g
- Unsaturated Fat: 13 g
- Trans Fat: 0 g
- Carbohydrates: 15 g
- Fiber: 1 g
- Protein: 28 g
- Cholesterol: 90 mg
