Chicken bell pepper casserole

Chicken and Bell Pepper Casserole

Chicken and Bell Pepper Casserole—flavorful, comforting, and easy to make. It blends tender chicken, sweet bell peppers, creamy sauce, and cheesy topping for a crowd-pleasing dinner.

Total Time

Servings: 6

Prep Time: 20 minutes

Cook Time: 35 minutes

Total Time: 55 minutes

Ingredients

For the Casserole:

2 tablespoons olive oil

1 ½ lbs (700g) boneless, skinless chicken breasts or thighs, diced

Salt and black pepper, to taste

1 teaspoon paprika

1 teaspoon garlic powder

1 onion, chopped

3 cloves garlic, minced

3 bell peppers (red, yellow, green), sliced thin

1 teaspoon dried oregano

1 teaspoon thyme or Italian seasoning

½ cup chicken broth (or dry white wine)

¾ cup sour cream or Greek yogurt

1 cup shredded mozzarella cheese

½ cup grated Parmesan cheese

Optional Add-ins:

1 cup cooked rice or pasta (for a heartier version)

½ teaspoon crushed red pepper flakes (for heat)

1 cup spinach or kale, chopped (for added greens)

Instructions

1. Preheat and Prepare

Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish.

2. Sauté the Chicken

Heat olive oil in a large skillet over medium heat.

Season diced chicken with salt, pepper, paprika, and garlic powder.

Cook chicken until browned and cooked through (about 5–7 minutes). Remove and set aside.

3. Cook the Vegetables

In the same skillet, add a bit more oil if needed.

Sauté onions for 2–3 minutes until translucent.

Add garlic and sliced bell peppers. Cook for another 4–5 minutes until softened.

Stir in oregano and thyme.

4. Combine and Simmer

Add chicken back to the skillet.

Pour in chicken broth and simmer for 3–4 minutes until slightly reduced.

Stir in sour cream (or Greek yogurt) and mix until creamy.

Taste and adjust seasoning.

5. Assemble the Casserole

Transfer the mixture into the prepared baking dish.

Sprinkle mozzarella and Parmesan over the top.

6. Bake

Bake uncovered for 20–25 minutes, or until bubbly and cheese is melted and golden.

7. Serve

Let it cool for 5 minutes before serving.

Garnish with fresh herbs like parsley or basil if desired.

Notes and Tips

Meal prep: You can cook the chicken and peppers ahead of time and assemble before baking.

Low-carb: Skip rice or pasta add-ins for a keto-friendly option.

Cheese: Swap mozzarella with cheddar or pepper jack for a flavor twist.

Frequently asked questions FAQs

Q: Can I use rotisserie chicken?

Yes! Use about 3 cups of shredded cooked chicken to save time.

Q: Can I freeze this casserole?

Yes, let it cool completely, wrap tightly, and freeze for up to 2 months.

Q: What can I serve with it?

Great with rice, quinoa, a fresh green salad, or crusty bread.

Nutrition information 

Calories: 350

Protein: 30g

Fat: 20g

Carbs: 10g

Fiber: 2g

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