When you’re looking for a meal that’s hearty, comforting, and packed with flavor, this Creamy Parmesan Garlic Chicken and Vegetables Casserole checks every box. Juicy chicken, colorful vegetables, a creamy garlic-Parmesan sauce, and melted cheese come together in one baking dish for a dinner that’s both satisfying and surprisingly easy to prepare.

Whether you’re feeding a busy family, preparing meals ahead of time, or simply craving homemade comfort food, this casserole delivers rich flavors without requiring hours in the kitchen.

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Why You’ll Love This Recipe

• One-pan meal with protein and vegetables
• Rich, creamy garlic Parmesan sauce
• Easy to customize with your favorite vegetables
• Great for meal prep and leftovers
• Family-friendly comfort food
• Ready in about an hour

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Ingredients

For the Chicken

• 2 pounds boneless, skinless chicken breasts, cut into bite-sized pieces
• 1 teaspoon salt
• ½ teaspoon black pepper
• 1 teaspoon Italian seasoning
• 1 tablespoon olive oil

Vegetables

• 2 cups broccoli florets
• 1 cup cauliflower florets
• 1 cup sliced carrots
• 1 cup zucchini, sliced
• ½ cup diced onion

Creamy Garlic Parmesan Sauce

• 3 tablespoons butter
• 5 cloves garlic, minced
• 3 tablespoons all-purpose flour
• 2 cups chicken broth
• 1 cup heavy cream
• 1 teaspoon Italian seasoning
• ½ teaspoon paprika
• 1 cup freshly grated Parmesan cheese
• Salt and pepper to taste

Topping

• 1½ cups shredded mozzarella cheese
• ¼ cup grated Parmesan cheese
• 2 tablespoons chopped fresh parsley

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Instructions

Step 1: Prepare the Oven

Preheat your oven to 375°F (190°C).

Lightly grease a 9×13-inch baking dish.

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Step 2: Cook the Chicken

Season the chicken with:

• Salt
• Pepper
• Italian seasoning

Heat olive oil in a large skillet over medium-high heat.

Cook the chicken for about 5–6 minutes until lightly browned. It doesn’t have to be fully cooked since it will finish baking.

Transfer to a plate.

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Step 3: Cook the Vegetables

In the same skillet, sauté:

• Onion
• Broccoli
• Cauliflower
• Carrots
• Zucchini

Cook for about 4–5 minutes until slightly tender.

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Step 4: Make the Garlic Parmesan Sauce

Reduce heat to medium.

Melt butter in the skillet.

Add garlic and cook for one minute until fragrant.

Whisk in flour and cook another minute.

Slowly whisk in:

• Chicken broth
• Heavy cream

Add:

• Italian seasoning
• Paprika
• Parmesan cheese

Continue stirring until the sauce becomes thick and creamy.

Taste and adjust seasoning if needed.

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Step 5: Assemble the Casserole

In the prepared baking dish combine:

• Cooked chicken
• Vegetables
• Creamy garlic Parmesan sauce

Mix gently.

Top evenly with:

• Mozzarella cheese
• Additional Parmesan

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Step 6: Bake

Bake uncovered for 25–30 minutes until bubbly and golden.

Broil for 2–3 minutes if you’d like a beautifully browned cheese topping.

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Step 7: Garnish

Sprinkle with fresh parsley before serving.

Serve hot.

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Serving Suggestions

This casserole pairs wonderfully with:

• Garlic bread
• Buttered dinner rolls
• Steamed rice
• Mashed potatoes
• Buttered egg noodles
• Simple garden salad
• Caesar salad

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Recipe Variations

Add Bacon

Mix in crispy bacon for extra smoky flavor.

Make It Spicy

Add:

• Crushed red pepper flakes
• Cayenne pepper
• Diced jalapeños

Low-Carb Version

Skip flour and thicken the sauce with cream cheese instead.

Extra Vegetables

Try adding:

• Spinach
• Mushrooms
• Bell peppers
• Green beans
• Brussels sprouts
• Asparagus

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Storage

Store leftovers in an airtight container in the refrigerator for up to 4 days.

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Freezing Instructions

This casserole freezes beautifully.

• Assemble completely.
• Cover tightly.
• Freeze for up to 3 months.

Bake from thawed or add 15–20 extra minutes if baking from frozen.

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Reheating

Microwave individual servings for 2–3 minutes.

Or reheat in a 350°F oven for 20–25 minutes until warmed through.

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Tips for Success

• Freshly grate Parmesan cheese for the smoothest sauce.
• Don’t overcook the vegetables before baking.
• Use rotisserie chicken to save time.
• Let the casserole rest for 10 minutes before serving.
• Add extra mozzarella if you love a cheesy casserole.

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Nutrition (Approximate Per Serving)

• Calories: 520
• Protein: 43g
• Carbohydrates: 14g
• Fat: 31g
• Fiber: 4g
• Sugar: 5g

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Final Thoughts

Creamy Parmesan Garlic Chicken and Vegetables Casserole is everything comfort food should be—warm, creamy, cheesy, and packed with wholesome ingredients. The savory garlic-Parmesan sauce coats every bite of tender chicken and fresh vegetables, creating a meal that’s both nourishing and indulgent. It’s perfect for weeknight dinners, potlucks, meal prep, or cozy family gatherings, and it’s sure to become a regular favorite in your recipe collection.