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Dinner / Chicken Quinoa Broccoli Casserole: A Healthy & Delicious Recipe

Chicken Quinoa Broccoli Casserole: A Healthy & Delicious Recipe

June 16, 2025 by ChloeDinner

Chicken Quinoa Broccoli Casserole: Prepare to be amazed! This isn’t your grandma’s casserole (unless your grandma was a culinary genius ahead of her time!). We’re taking the classic comfort food and giving it a healthy, modern twist that will have everyone begging for seconds. Forget bland and boring; this dish is packed with flavor and nutrients, making it the perfect weeknight meal.

Casseroles have a long and storied history, evolving from humble peasant fare designed to stretch ingredients into hearty meals to the beloved family staples we know today. While the exact origins are debated, the concept of baking ingredients together in a single dish has been around for centuries, adapting to different cultures and cuisines. This Chicken Quinoa Broccoli Casserole builds upon that tradition, incorporating the superfood quinoa and vibrant broccoli to create a dish that’s both nourishing and delicious.

So, why do people love casseroles? It’s simple: they’re convenient, customizable, and incredibly satisfying. This particular casserole hits all the right notes. The tender chicken, fluffy quinoa, and crisp-tender broccoli create a delightful textural contrast. The creamy sauce binds everything together, delivering a burst of flavor with every bite. Plus, it’s a fantastic way to sneak in extra vegetables for picky eaters (they’ll never know!). Get ready to experience a casserole that’s both good for you and incredibly delicious!

Chicken Quinoa Broccoli Casserole this Recipe

Ingredients:

  • 1.5 lbs boneless, skinless chicken breasts, cut into 1-inch cubes
  • 1 cup uncooked quinoa, rinsed
  • 2 cups chicken broth
  • 4 cups broccoli florets, cut into bite-sized pieces
  • 1 medium yellow onion, chopped
  • 2 cloves garlic, minced
  • 1/4 cup butter
  • 1/4 cup all-purpose flour
  • 3 cups milk (I prefer whole milk for richness, but 2% works too!)
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1/4 teaspoon nutmeg (trust me on this one!)
  • 1 cup shredded cheddar cheese, divided
  • 1/2 cup shredded mozzarella cheese, divided
  • 1/4 cup grated Parmesan cheese
  • 1/4 cup breadcrumbs (panko breadcrumbs give a nice crunch!)
  • 2 tablespoons olive oil
  • Optional: Red pepper flakes for a little kick

Cooking the Quinoa and Chicken:

  1. Rinse the quinoa thoroughly. This is important to remove the saponins, which can make it taste bitter. I usually rinse it in a fine-mesh sieve under cold running water for a couple of minutes.
  2. In a medium saucepan, combine the rinsed quinoa and chicken broth. Bring to a boil over medium-high heat.
  3. Once boiling, reduce the heat to low, cover, and simmer for 15 minutes, or until the quinoa is cooked through and the liquid is absorbed. Fluff with a fork and set aside.
  4. While the quinoa is cooking, heat 1 tablespoon of olive oil in a large skillet over medium-high heat. Add the cubed chicken and cook until browned and cooked through, about 6-8 minutes. Season with salt, pepper, and a pinch of red pepper flakes (if using). Remove the chicken from the skillet and set aside.

Preparing the Broccoli and Cheese Sauce:

  1. In the same skillet, add the remaining 1 tablespoon of olive oil. Add the chopped onion and cook until softened, about 5 minutes.
  2. Add the minced garlic and cook for another minute, until fragrant. Be careful not to burn the garlic!
  3. Add the broccoli florets to the skillet. You can add a splash of water (about 2 tablespoons) and cover the skillet to help steam the broccoli until it’s slightly tender-crisp, about 5-7 minutes. You want it to still have a little bite to it, as it will continue to cook in the oven. Remove the broccoli from the skillet and set aside.
  4. Now, let’s make the cheese sauce! In the same skillet (wipe it out if needed), melt the butter over medium heat.
  5. Whisk in the flour and cook for 1-2 minutes, stirring constantly, to create a roux. This will help thicken the sauce.
  6. Gradually whisk in the milk, making sure to break up any lumps. Continue whisking until the sauce is smooth.
  7. Bring the sauce to a simmer, stirring constantly, and cook for 5-7 minutes, or until it has thickened slightly.
  8. Remove the skillet from the heat and stir in the salt, pepper, and nutmeg.
  9. Add 3/4 cup of the shredded cheddar cheese, 1/4 cup of the shredded mozzarella cheese, and the Parmesan cheese to the sauce. Stir until the cheese is melted and the sauce is smooth and creamy.

Assembling the Casserole:

  1. Preheat your oven to 375°F (190°C).
  2. In a large bowl, combine the cooked quinoa, cooked chicken, and steamed broccoli.
  3. Pour the cheese sauce over the mixture and stir gently to combine everything evenly.
  4. Pour the mixture into a greased 9×13 inch baking dish.
  5. In a small bowl, combine the remaining 1/4 cup of shredded cheddar cheese, 1/4 cup of shredded mozzarella cheese, and the breadcrumbs.
  6. Sprinkle the cheese and breadcrumb mixture evenly over the top of the casserole.

Baking the Casserole:

  1. Bake in the preheated oven for 20-25 minutes, or until the casserole is bubbly and the topping is golden brown.
  2. Let the casserole cool for a few minutes before serving. This will help it set up a bit and prevent it from being too runny.

Tips and Variations:

  • Spice it up! Add a pinch of red pepper flakes to the chicken or the cheese sauce for a little heat.
  • Add vegetables! Feel free to add other vegetables to the casserole, such as chopped carrots, bell peppers, or mushrooms.
  • Use different cheese! Experiment with different types of cheese, such as Gruyere, Monterey Jack, or pepper jack.
  • Make it gluten-free! Use gluten-free breadcrumbs or omit them altogether.
  • Make it ahead! You can assemble the casserole ahead of time and store it in the refrigerator for up to 24 hours. Add a few extra minutes to the baking time if baking from cold.
  • Freezing Instructions: Allow the casserole to cool completely. Wrap tightly with plastic wrap, then with aluminum foil. Freeze for up to 3 months. Thaw overnight in the refrigerator before baking as directed, adding about 10-15 minutes to the baking time.
  • Broccoli Tip: If you don’t want to steam the broccoli in the skillet, you can also steam it in the microwave or boil it for a few minutes until it’s tender-crisp.
  • Chicken Tip: You can also use leftover cooked chicken or rotisserie chicken to save time.
  • Quinoa Tip: If you don’t have chicken broth, you can use water to cook the quinoa, but the chicken broth adds more flavor.
Serving Suggestions:

This Chicken Quinoa Broccoli Casserole is a complete meal on its own, but you can also serve it with a side salad or some crusty bread.

Chicken Quinoa Broccoli Casserole

Conclusion:

This Chicken Quinoa Broccoli Casserole isn’t just another weeknight dinner; it’s a flavor explosion disguised as a healthy and comforting meal. From the satisfying chew of the quinoa to the tender chicken and vibrant broccoli, all bathed in a creamy, cheesy sauce, this casserole is a guaranteed crowd-pleaser. I truly believe this recipe is a must-try because it effortlessly balances taste, nutrition, and convenience. It’s the kind of dish that makes you feel good from the inside out, knowing you’re nourishing your body with wholesome ingredients without sacrificing an ounce of deliciousness.

But the best part? It’s incredibly versatile! Feel free to experiment with different cheeses – a sharp cheddar would add a bolder flavor, while Gruyere would lend a sophisticated, nutty note. You could also swap out the broccoli for other vegetables like cauliflower, Brussels sprouts, or even a medley of roasted root vegetables for a heartier, autumnal twist. For a spicier kick, add a pinch of red pepper flakes to the sauce or use a pepper jack cheese. If you’re looking to lighten things up, consider using Greek yogurt instead of sour cream for a tangier, lower-fat option.

Serving suggestions are endless! This casserole is fantastic on its own as a complete meal. However, it also pairs beautifully with a simple side salad, some crusty bread for soaking up all that delicious sauce, or even a light soup. For a more elegant presentation, you could bake the casserole in individual ramekins. If you have any leftovers (though I doubt you will!), they reheat beautifully, making it perfect for lunch the next day. You can even repurpose the leftovers into stuffed bell peppers or use them as a filling for quesadillas.

I’ve poured my heart into perfecting this Chicken Quinoa Broccoli Casserole, and I’m so excited for you to try it. It’s a recipe that I keep coming back to time and time again, and I’m confident that it will become a staple in your household too. It’s the perfect solution for busy weeknights, potlucks, or any occasion where you need a comforting and satisfying dish that everyone will love.

So, what are you waiting for? Gather your ingredients, preheat your oven, and get ready to experience the magic of this incredible casserole. I promise you won’t be disappointed. And most importantly, I would absolutely love to hear about your experience! Did you make any modifications? What did your family think? Share your photos and stories in the comments below. Your feedback is invaluable, and it helps me continue to create and share recipes that you’ll love. Happy cooking, and I can’t wait to see your culinary creations! Don’t forget to tag me in your photos so I can see your amazing Chicken Quinoa Broccoli Casserole creations!


Chicken Quinoa Broccoli Casserole: A Healthy & Delicious Recipe

A comforting and cheesy Chicken Quinoa Broccoli Casserole, packed with protein and veggies. A healthy and delicious family favorite!

Prep Time20 minutes
Cook Time45 minutes
Total Time65 minutes
Category: Dinner
Yield: 6-8 servings
Save This Recipe

Ingredients

  • 1.5 lbs boneless, skinless chicken breasts, cut into 1-inch cubes
  • 1 cup uncooked quinoa, rinsed
  • 2 cups chicken broth
  • 4 cups broccoli florets, cut into bite-sized pieces
  • 1 medium yellow onion, chopped
  • 2 cloves garlic, minced
  • 1/4 cup butter
  • 1/4 cup all-purpose flour
  • 3 cups milk (whole milk preferred, 2% works too)
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1/4 teaspoon nutmeg
  • 1 cup shredded cheddar cheese, divided
  • 1/2 cup shredded mozzarella cheese, divided
  • 1/4 cup grated Parmesan cheese
  • 1/4 cup breadcrumbs (panko recommended)
  • 2 tablespoons olive oil

Instructions

  1. Rinse the quinoa: Rinse quinoa thoroughly in a fine-mesh sieve under cold running water for a couple of minutes.
  2. Cook the quinoa: Combine rinsed quinoa and chicken broth in a medium saucepan. Bring to a boil over medium-high heat. Reduce heat to low, cover, and simmer for 15 minutes, or until quinoa is cooked through and liquid is absorbed. Fluff with a fork and set aside.
  3. Cook the chicken: Heat 1 tablespoon of olive oil in a large skillet over medium-high heat. Add cubed chicken and cook until browned and cooked through, about 6-8 minutes. Season with salt, pepper, and red pepper flakes (if using). Remove chicken from skillet and set aside.
  4. Sauté onion and garlic: In the same skillet, add the remaining 1 tablespoon of olive oil. Add chopped onion and cook until softened, about 5 minutes. Add minced garlic and cook for another minute, until fragrant.
  5. Steam the broccoli: Add broccoli florets to the skillet. Add a splash of water (about 2 tablespoons) and cover the skillet to help steam the broccoli until it’s slightly tender-crisp, about 5-7 minutes. Remove the broccoli from the skillet and set aside.
  6. Make the roux: In the same skillet (wipe it out if needed), melt the butter over medium heat. Whisk in the flour and cook for 1-2 minutes, stirring constantly, to create a roux.
  7. Make the cheese sauce: Gradually whisk in the milk, making sure to break up any lumps. Continue whisking until the sauce is smooth. Bring the sauce to a simmer, stirring constantly, and cook for 5-7 minutes, or until it has thickened slightly. Remove the skillet from the heat and stir in the salt, pepper, and nutmeg. Add 3/4 cup of the shredded cheddar cheese, 1/4 cup of the shredded mozzarella cheese, and the Parmesan cheese to the sauce. Stir until the cheese is melted and the sauce is smooth and creamy.
  8. Preheat oven: Preheat your oven to 375°F (190°C).
  9. Combine ingredients: In a large bowl, combine the cooked quinoa, cooked chicken, and steamed broccoli.
  10. Add cheese sauce: Pour the cheese sauce over the mixture and stir gently to combine everything evenly.
  11. Pour into baking dish: Pour the mixture into a greased 9×13 inch baking dish.
  12. Make topping: In a small bowl, combine the remaining 1/4 cup of shredded cheddar cheese, 1/4 cup of shredded mozzarella cheese, and the breadcrumbs.
  13. Sprinkle topping: Sprinkle the cheese and breadcrumb mixture evenly over the top of the casserole.
  14. Bake: Bake in the preheated oven for 20-25 minutes, or until the casserole is bubbly and the topping is golden brown.
  15. Cool: Let the casserole cool for a few minutes before serving.

Notes

  • Spice it up! Add a pinch of red pepper flakes to the chicken or the cheese sauce for a little heat.
  • Add vegetables! Feel free to add other vegetables to the casserole, such as chopped carrots, bell peppers, or mushrooms.
  • Use different cheese! Experiment with different types of cheese, such as Gruyere, Monterey Jack, or pepper jack.
  • Make it gluten-free! Use gluten-free breadcrumbs or omit them altogether.
  • Make it ahead! You can assemble the casserole ahead of time and store it in the refrigerator for up to 24 hours. Add a few extra minutes to the baking time if baking from cold.
  • Freezing Instructions: Allow the casserole to cool completely. Wrap tightly with plastic wrap, then with aluminum foil. Freeze for up to 3 months. Thaw overnight in the refrigerator before baking as directed, adding about 10-15 minutes to the baking time.
  • Broccoli Tip: If you don’t want to steam the broccoli in the skillet, you can also steam it in the microwave or boil it for a few minutes until it’s tender-crisp.
  • Chicken Tip: You can also use leftover cooked chicken or rotisserie chicken to save time.
  • Quinoa Tip: If you don’t have chicken broth, you can use water to cook the quinoa, but the chicken broth adds more flavor.
  • Serving Suggestions: This Chicken Quinoa Broccoli Casserole is a complete meal on its own, but you can also serve it with a side salad or some crusty bread.

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