Easy Chicken Zucchini Bake (One-Pan Dinner)

Finding a dinner that checks all the boxes—healthy, comforting, and quick to clean up—can feel like a challenge on busy weeknights. This Chicken Zucchini Bake is the ultimate solution. It combines juicy, seasoned chicken breast pieces with fresh, tender zucchini in a light, savory sauce, all topped with a bubbly layer of melted cheese. Because it comes together effortlessly in just one baking dish, it is bound to become a regular in your dinner rotation.

Why You’ll Love This Recipe

• One-Pan Convenience: Minimal dishes mean you spend less time cleaning up and more time enjoying your evening.
• Nutritious and Filling: Packed with lean protein and fresh summer squash, it is a wholesome meal that leaves you satisfied.
• Crowd-Pleasing Flavor: The combination of smoky paprika, sweet onions, and a dual-cheese topping ensures that everyone at the table will ask for seconds.

Ingredients

• Zucchini: Four medium squash, diced into bite-sized pieces. If you have extra squash on hand, you can also try making air fryer zucchini chips for a crunchy snack.
• Olive Oil: Divided for coating the vegetables and searing the protein.
• Kosher Salt and Black Pepper: To bring out all the natural savory flavors.
• Paprika: Smoked or sweet paprika adds a beautiful color and a warm flavor profile.
• Chicken Breast: Boneless, skinless breasts cut into uniform 1-inch cubes to ensure even cooking.
• Cornstarch: Helps create a light coating on the meat and thickens the pan juices into a beautiful sauce.
• Chicken Broth: Used to deglaze the skillet and create the base of the savory sauce.
• Sweet Onion: Adds a natural, mild sweetness that balances the savory elements perfectly.
• Monterey Jack Cheese: Melts beautifully into a gooey, creamy layer.
• Parmesan Cheese: Adds a sharp, salty bite to the golden crust.

Step-by-Step Instructions

1. Prep the Oven and Veggies: Start by preheating your oven to 375°F. In a large mixing bowl, toss the diced zucchini and sweet onion with one tablespoon of olive oil, half of the kosher salt and pepper, and one tablespoon of paprika until everything is evenly seasoned. Set this mixture aside.
2. Coat the Protein: In a separate bowl, toss the cubed chicken breasts with the remaining tablespoon of paprika, a pinch of salt and pepper, and the cornstarch until the pieces are thoroughly coated.
3. Sear the Meat: Heat the remaining tablespoon of olive oil in a large skillet over medium heat. Arrange the chicken pieces in a single layer and sear for about 3 to 4 minutes. You want them to turn golden on both sides, but they do not need to be fully cooked through yet.
4. Deglaze: Pour the chicken broth directly into the hot skillet. Use a wooden spoon to gently scrape up any flavorful browned bits stuck to the bottom of the pan.
5. Assemble the Casserole: Spread the seasoned zucchini and onion mixture evenly across the bottom of your baking dish. Pour the seared meat along with all of the broth from the pan right over the vegetables.
6. Add Cheese and Bake: Sprinkle the shredded Monterey Jack and Parmesan cheese over the top. Cover the baking dish tightly with aluminum foil and bake for 25 minutes.
7. Finish and Brown: Remove the foil, give the contents a good stir to distribute the building sauce, and return it to the oven uncovered. Bake for another 10 to 15 minutes, or until the cheese is completely melted and lightly golden. Give it one final stir before serving hot.

Expert Tips

• Uniform Cutting: Cut both your squash and meat into similar 1-inch sizes. This ensures that the vegetables soften perfectly in the exact same time it takes for the protein to cook through.
• Don’t Overcrowd the Skillet: When searing the protein, give the pieces a little space. If the pan is too crowded, they will steam instead of getting that nice golden crust.
• Adjust the Spice: If you prefer a bit of heat, feel free to add a pinch of red pepper flakes or a dash of garlic powder to the spice blend.

Variations

• Swap the Cheese: Mozzarella or a sharp cheddar work beautifully in place of Monterey Jack if you want to use what you already have in the fridge.
• Add More Veggies: Bell peppers, halved cherry tomatoes, or sliced mushrooms make wonderful additions to the vegetable base.
• Change the Protein: Boneless, skinless chicken thighs can be used instead of breasts for an even juicier texture, though they may require an extra minute or two of searing time.

Storage and Reheating

• To Store: Keep any leftovers in an airtight container in the refrigerator for up to 3 to 4 days.
• To Reheat: Warm individual portions in the microwave for 1 to 2 minutes, or place the leftovers back into a baking dish, cover with foil, and warm in a 350°F oven until heated through.

Serving Suggestions

This versatile main course pairs beautifully with a variety of side dishes. Serve it over a bed of fluffy white rice, quinoa, or buttered noodles to soak up every drop of the savory sauce. If you prefer a lighter meal, a crisp green side salad or some crusty garlic bread makes a perfect accompaniment.

FAQ

Can I make this dish ahead of time? Yes! You can chop the vegetables and coat the meat a few hours in advance. Keep them stored separately in the refrigerator, then sear and bake right before you are ready to eat.

Why do we use cornstarch? The cornstarch serves two purposes: it helps the seasonings stick to the protein, and it combines with the broth to create a smooth, velvety sauce that binds the casserole together.

Chicken Zucchini Bake

This chicken zucchini bake is an easy, one-pan dinner made with seasoned chicken breasts, seasoned zucchini, a light, savory sauce, and melted cheese. Simple and comforting, and makes for a perfect weeknight dinner

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 45 minutes mins

Total Time 1 hour hr

Course Main Course

Cuisine American

Servings 4

Ingredients

  

• 4 medium Zucchini diced
• 2 tablespoons olive oil divided
• Kosher salt and pepper to taste
• 2 tablespoons smoked or sweet paprika divided
• 1.5 pounds Boneless skinless chicken breast cut into 1-inch pieces
• 2 tablespoons cornstarch
• 1/2 cup chicken broth
• 1 large sweet onion diced
• 1 cup shredded Monterrey jack cheese
• 1/2 cup shredded parmesan cheese

Instructions

 

• Preheat the oven to 375°F. In a large bowl, combine the 4 medium diced zucchini, 1 large diced sweet onion, 1 tablespoon of the olive oil, and half of the seasonings (kosher salt, pepper, and 1 tablespoon of paprika) until nicely coated. Set aside.
• Place the cubed 1.5 pounds of chicken breast in a separate bowl and toss to evenly coat with the remaining 1 tablespoon of paprika, some salt and pepper, and 2 tablespoons of cornstarch.
• Heat the remaining tablespoon of olive oil in a large pan over medium heat. Add the chicken pieces in a single layer and cook until golden on both sides, but not fully cooked through (about 3-4 minutes).
• Pour the 1/2 cup of chicken broth into the pan and stir gently to deglaze, lifting any browned bits from the bottom.
• In a baking dish, spread the seasoned onion and zucchini mixture evenly.
• Pour the seared chicken and broth directly over the zucchini layer in the dish.
• Sprinkle evenly with 1 cup of shredded Monterey Jack cheese and 1/2 cup of shredded Parmesan cheese. Cover the dish tightly with aluminum foil.
• Bake for 25 minutes, then remove the foil and stir the contents well. Continue to bake, uncovered, for an additional 10-15 minutes, or just until the top is lightly golden brown.
• Give the dish a final stir right before serving.

Notes

Feel free to substitute mozzarella or cheddar for the Monterey Jack cheese if preferred. Ensure chicken pieces are cut to a uniform 1-inch size so they cook evenly with the zucchini.