Welcome to the ultimate guide for creating a truly delightful and incredibly satisfying weeknight meal: the **Broccoli Chicken Pasta Casserole**. This dish isn’t just a meal; it’s a warm, comforting hug in a baking dish, brimming with tender chicken, wholesome pasta, and vibrant broccoli, all enveloped in a rich, creamy, and undeniably cheesy sauce. Perfect for busy evenings, family dinners, or even meal prepping, this casserole consistently earns rave reviews and becomes an instant household favorite.
Imagine coming home after a long day to the aroma of savory chicken, fresh broccoli, and melted cheddar cheese baking to golden perfection. This casserole delivers on all fronts: comfort, hearty satisfaction, and exceptional flavor, all while being surprisingly easy to prepare. It’s the quintessential crowd-pleaser that takes minimal effort for maximum deliciousness.

What makes this Broccoli Chicken Pasta Casserole stand out? Beyond its incredible taste, it’s designed to be a super satisfying meal that doesn’t weigh you down, often coming in at under 350 calories per serving. We combine succulent, shredded chicken with crisp-tender broccoli florets and hearty whole wheat pasta, all brought together by a lusciously smooth cheddar cheese sauce. This isn’t just dinner; it’s an experience crafted to appease even the heartiest appetites. Plus, its freezer-friendly nature makes it an ideal candidate for preparing ahead of time, ensuring you always have a wholesome, homemade meal ready when you need it.
If you love the convenience and comfort of casseroles as much as we do, you’re in for a treat. Casseroles are our ultimate go-to for one-pot wonders, eliminating the stress of multiple dishes and complicated side preparations. This particular recipe epitomizes ease, moving from your pantry to your dinner table in approximately 40-45 minutes. It’s the perfect solution for a hearty, complete meal without the fuss.
Why Choose a Casserole?

Casseroles are the heroes of convenient cooking. They offer a complete meal in one dish, minimizing cleanup and maximizing flavor. This Broccoli Chicken Pasta Casserole is a prime example, providing balanced nutrition with protein, vegetables, and carbohydrates all in one comforting package.
For more delicious and easy pasta creations, be sure to explore our Easy Cheeseburger Pasta and the indulgent Spinach and Ricotta Stuffed Pasta!
Essential Ingredients for Your Perfect Casserole
Crafting this incredible Broccoli Chicken Pasta Casserole begins with selecting high-quality, fresh ingredients. Here’s what you’ll need to gather:

- Whole Wheat Pasta: We recommend whole wheat for added fiber and nutrients, but feel free to use your favorite pasta shape. Smaller shapes like elbow macaroni, penne, or fusilli work wonderfully as they hold the creamy sauce well.
- Fresh Vegetables: A vibrant combination of broccoli florets, diced white onion, and sliced cremini mushrooms forms the heart of our veggie blend. Don’t hesitate to customize with other favorites like carrots, peas, corn, or cauliflower.
- Cooked Chicken Breast: This recipe shines with diced or shredded cooked chicken. Rotisserie chicken is a fantastic time-saver, or you can cook your own chicken breasts or boneless, skinless chicken thighs for a delicious result.
- Olive Oil: The base for sautéing our aromatic vegetables. Any neutral cooking oil will work.
- Fresh Garlic: Minced fresh garlic infuses the dish with an incomparable pungent and savory flavor. If fresh isn’t available, garlic powder can be a suitable substitute, though fresh is always preferred.
- Dijon Mustard: A secret ingredient that adds a subtle tang and depth to the creamy cheese sauce, elevating the overall flavor profile.
- Cornstarch: Our preferred thickening agent for achieving a perfectly smooth and rich sauce without excessive fat.
- Cheddar Cheese: The star of our creamy sauce, providing that beloved cheesy comfort. For the best melt and flavor, we recommend shredding your own from a block.
- Milk: Use any milk you prefer – whole milk for a richer, creamier sauce, or a lower-fat option for a lighter touch.
- Chicken or Vegetable Stock: Adds a foundational layer of savory flavor to the sauce.
- Salt & Pepper: Essential seasonings to enhance all the vibrant flavors in the casserole.
Pro Tips for Casserole Perfection
- **Time-Saving Shortcut:** Leverage pre-cooked chicken! A store-bought rotisserie chicken or leftover cooked chicken breast makes assembly incredibly quick.
- **Fresh Broccoli Advantage:** While frozen broccoli works, opting for fresh florets allows you to control the size and ensures a crisper texture in the final bake.
- **Al Dente is Key:** Cook your pasta for one minute less than the package directions for al dente. This prevents it from becoming mushy during the baking process, ensuring perfect pasta texture.
- **Customize Creaminess:** Adjust the fat content of your milk to match your preference for richness. Whole milk delivers a decadent sauce, while skim or 2% milk offers a lighter option.
- **A Touch of Warmth:** For an extra layer of cozy, warming flavor, add a small dash of nutmeg to your cheese sauce. It complements the cheddar beautifully, especially in cooler months.
- **Shred Your Own Cheese:** Pre-shredded cheese often contains anti-caking agents that can hinder smooth melting. Shredding cheddar from a block ensures a much creamier, more luxurious sauce.
- **Spice it Up:** If you enjoy a little heat, a pinch of red pepper flakes stirred into the sauce can add a delightful kick.

Common Questions About This Casserole
This casserole is incredibly versatile when it comes to vegetable additions. Beyond broccoli, onion, and mushrooms, you can easily incorporate other flavorful ingredients. Consider adding diced carrots for a touch of sweetness and color, frozen peas or corn for convenience, or even cauliflower florets for added nutrients and texture. Feel free to use whatever seasonal vegetables you have on hand!
For casseroles, small to medium-shaped pasta varieties work best as they mix well with the other ingredients and hold onto the creamy sauce beautifully. Look for shapes with plenty of nooks and crannies to capture all that cheesy goodness! Excellent choices include elbow macaroni, rigatoni, medium shells, penne, and fusilli.
Storing this pasta bake is simple! Transfer any leftovers to an airtight container and refrigerate for 3 to 5 days. For longer storage, this dish freezes beautifully for up to 3 months. When reheating from the fridge, simply place portions in a microwave-safe dish and heat until warmed through. From frozen, thaw in the refrigerator overnight, then place in a baking dish, cover with aluminum foil, and bake at 350°F (175°C) for 20-30 minutes, or until thoroughly heated and bubbly.
Absolutely! If you prefer to cook your own chicken, simply season a couple of boneless, skinless chicken breasts or thighs with your favorite herbs and spices. You can pan-fry them on the stovetop until cooked through, bake them in the oven, or even poach them. Once cooked, dice or shred the chicken according to the recipe instructions.

Discover More Irresistible Chicken Recipes
If you’re a fan of delicious and versatile chicken dishes, you’ll love these other recipes that are perfect for any meal:
- Creamy Mushroom Chicken Recipe: A decadent and quick stovetop meal with a rich mushroom sauce.
- Easy Chicken Stroganoff: A classic comfort food, simplified for weeknights.
- Chicken Shawarma Bowls: Flavorful, healthy, and customizable bowls inspired by Middle Eastern cuisine.
- Healthy Chicken Francese Recipe: A lighter take on the elegant Italian-American dish, featuring pan-fried chicken in a lemon-butter sauce.
- Chicken Broccoli Rice Casserole: Another hearty casserole option, swapping pasta for rice for a different texture.
- Mexican Chipotle Chicken Pasta: A vibrant and spicy pasta dish with a Mexican flair.
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Broccoli Chicken Pasta Casserole
Rena
6 servings
10
35
45
Video
Ingredients
- 8 ounces whole-wheat pasta
- 1 large head of broccoli, about 1 pound of florets
- 2 tablespoons olive oil
- 1 small white onion, diced
- 8 ounces cremini mushrooms, quartered
- 4 cloves garlic, minced
- 2 tablespoons cornstarch
- 1-1/2 cups milk of choice
- 1 cup chicken or vegetable stock
- 1 tablespoon Dijon mustard
- 1 teaspoon kosher salt
- 1/4 teaspoon freshly-cracked black pepper
- 2 cups diced cooked chicken breast (diced or shredded, rotisserie chicken works great)
- 1 1/2 cups shredded cheddar cheese, divided
Instructions
- Heat the oven to 400°F (200°C). Cook 8 ounces whole-wheat pasta according to package directions. Stir occasionally until pasta is al dente, about 10-12 minutes.
- Cut 1 large head of broccoli into bite-size pieces. Quarter 8 ounces cremini mushrooms and dice 1 small white onion. About a minute or two before the pasta is done, add the broccoli florets to the pasta water to blanch briefly.
- When finished cooking, drain the pasta and broccoli well in a colander and run under cold water to stop the cooking process. Set aside.
- Next, heat 2 tablespoons olive oil in a large pan or Dutch oven over medium-high heat. Add the diced onion and sauté for 3 minutes, stirring occasionally. Add the quartered mushrooms and 4 cloves minced garlic, and cook until the mushrooms are slightly golden brown and tender.
- Meanwhile, in a small bowl, whisk together 2 tablespoons cornstarch with 1/4 cup of the 1-1/2 cups milk of choice until smooth. Set aside.
- Reduce the heat to low. Pour 1 cup chicken or vegetable stock and the remaining 1 1/4 cup milk into the pan with the vegetables. Add 1 tablespoon Dijon mustard, 1 teaspoon kosher salt, and 1/4 teaspoon freshly-cracked black pepper. Mix well to combine all ingredients. Cook gently until the mixture begins to simmer.
- Gradually pour in the prepared cornstarch and milk mixture, stirring thoroughly as you pour. Continue to cook, stirring constantly, until the sauce thickens to your desired consistency.
- Remove the pan from the heat. Stir in 1 cup of the 1 1/2 cups shredded cheddar cheese until it melts and the sauce is smooth and creamy. Taste and adjust the salt and pepper as needed.
- In a large baking dish (9×13 inch or similar), combine the cooked pasta, blanched broccoli, and 2 cups diced cooked chicken breast. Pour the mushroom cheese sauce over the pasta and chicken mixture. Stir gently to ensure all ingredients are nicely coated with the creamy sauce.
- Smooth the top of the casserole with the back of a spoon and sprinkle evenly with the remaining 1/2 cup of shredded cheddar cheese.
- Bake in the preheated 400°F (200°C) oven for 15 minutes, or until the cheese on top is bubbly, melted, and golden brown. Serve warm and savor every comforting bite!
Notes
- Always use a preheated oven for even cooking and proper browning.
- To save time, utilizing rotisserie chicken or leftover cooked chicken is highly recommended.
- Purchasing fresh broccoli and cutting it into florets yourself gives you control over their size and ensures maximum freshness.
- Stir your pasta immediately after adding it to boiling water to prevent it from sticking together.
- Cook your pasta a minute shy of al dente; this prevents it from becoming overly soft or mushy during the baking process in the oven.
- The choice of milk fat content is flexible; use whole milk for a rich, creamy texture, or a lighter milk for a healthier option.
- For superior melting and a smoother sauce, it is highly recommended to shred your own cheddar cheese from a block rather than using pre-shredded varieties.
- For those who enjoy a little heat, a sprinkle of red pepper flakes can be added to the sauce.
- A dash of nutmeg can enhance the savory notes and add a comforting, warming flavor, especially delightful in colder weather.
Nutrition
Carbohydrates: 45g
Protein: 29g
Fat: 11g
Saturated Fat: 3g
Cholesterol: 42mg
Sodium: 760mg
Potassium: 751mg
Fiber: 3g
Sugar: 4g
Vitamin A: 831IU
Vitamin C: 92mg
Calcium: 223mg
Iron: 3mg
Nutrition information is automatically calculated, so should only be used as an approximation.
Additional Info
Main Course
American
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