There’s something so heartwarming about gathering around a home-cooked meal, and this Easy Gluten-Free Broccoli Chicken Divan Casserole brings that comfort straight to your dinner table. Packed with tender chicken and colorful broccoli, all enveloped in a luscious, creamy sauce, this dish is a nourishing dream come true. It’s perfect for those busy weeknights when you crave something hearty yet easy to prepare, plus the best part? You can customize it to suit any dietary needs! Whether you’re looking for a gluten-free indulgence or a quick meal that will have everyone asking for seconds, this casserole is here to deliver. Are you ready to whip up magic in the kitchen? Let’s dive into the recipe!

Why is This Casserole a Must-Try?
Comforting Twist: This Broccoli Chicken Divan Casserole offers a warm, cozy embrace, perfect for chilly nights or when you need a homey meal.
Customizable to Taste: Feel free to swap ingredients effortlessly; whether it’s replacing chicken with tofu for a vegan option or using seasonal veggies, the possibilities are endless!
Nutritious & Tasty: Packed with protein from chicken and the vibrant goodness of broccoli, it’s a wholesome choice your family will love.
Quick & Simple: Just a few steps and under 30 minutes in the oven make this dish ideal for busy weeknights. Plus, it’s a fantastic way to use leftover chicken!
Crowd Favorite: Whether you’re entertaining guests or just feeding the family, this casserole will earn you rave reviews. Serve it alongside a fresh green salad or some warm bread for a complete meal!
Broccoli Chicken Divan Casserole Ingredients
• Whip up this comforting dish with ease!
For the Casserole
- Chicken Breast – Provides protein and structure; feel free to use poached, baked, or leftover chicken.
- Broccoli Florets – Adds nutrition and vibrant color; substitute with cauliflower for a similar texture.
- Mayonnaise – Contributes creaminess to the sauce; Greek yogurt can replace it for a tangy twist.
- Sour Cream – Adds richness and a slight tang; you can use extra Greek yogurt if you prefer.
- Grated Parmesan – Enhances flavor with a salty note; consider nutritional yeast for a vegan option.
- Lemon Juice – Provides acidity to balance flavors; white vinegar can work as an alternative.
- Dijon Mustard – Infuses a mild tang; feel free to omit it if the flavor isn’t your favorite.
- Garlic Powder – Adds depth of flavor; fresh garlic can be used for a more intense taste.
- Onion Powder – Enhances overall flavor; fresh onions are also a good alternative.
- Salt and Pepper – Essential for flavor enhancement; adjust these seasonings to your taste.
- Shredded Cheddar – Gives a cheesy topping that bakes beautifully; swap with dairy-free cheese for a vegan version.
- Breadcrumbs – Creates a crunchy topping; gluten-free breadcrumbs can be used to accommodate dietary needs.
Expert Tip: This Broccoli Chicken Divan Casserole is deliciously versatile—don’t hesitate to make it your own!
Step‑by‑Step Instructions for Broccoli Chicken Divan Casserole
Step 1: Prepare Ingredients
Begin by cooking your chicken breast—poaching or baking works well—until it reaches an internal temperature of 165°F (75°C). While it cools, bring a pot of salted water to a boil and blanch the broccoli florets for 2-3 minutes, until bright green and slightly tender. Immediately transfer the broccoli to a bowl of ice water to stop the cooking process.
Step 2: Make Sauce
In a large mixing bowl, combine the mayonnaise, sour cream, grated Parmesan, lemon juice, Dijon mustard, garlic powder, onion powder, salt, and pepper. Whisk the mixture until it’s smooth and creamy, ensuring all ingredients are well incorporated. This luscious sauce will be the flavorful base for your Broccoli Chicken Divan Casserole.
Step 3: Assemble Casserole
Preheat your oven to 350°F (175°C). In a large baking dish, layer the shredded chicken evenly at the bottom, then add the blanched broccoli on top. Pour the creamy sauce over the chicken and broccoli, using a spatula to spread it out evenly. To finish the assembly, sprinkle the shredded cheddar and breadcrumbs generously over the top for a golden crust.
Step 4: Bake
Place the casserole in the preheated oven and bake for 25-30 minutes. Keep an eye on it as it bakes; you want the sauce to bubble and the breadcrumb topping to turn a lovely golden brown. This visual cue indicates that your Broccoli Chicken Divan Casserole is ready to be enjoyed straight from the oven.
Step 5: Rest & Serve
Once baked, remove the casserole from the oven and let it rest for about 5 minutes to allow the layers to settle and flavors to develop. Serve warm, optionally garnished with fresh herbs for an added touch of color and flavor. Enjoy this comforting dish with your favorite sides for a delightful meal!

How to Store and Freeze Broccoli Chicken Divan Casserole
- Fridge: Store leftovers in an airtight container for up to 3 days. This will keep the casserole fresh while maintaining its creamy texture.
- Freezer: You can freeze the casserole for up to 2 months. Make sure it’s well-covered to prevent freezer burn.
- Thawing: When ready to enjoy, thaw the Broccoli Chicken Divan Casserole overnight in the refrigerator before reheating.
- Reheating: To reheat, warm it in the oven at 350°F (175°C) for about 20-25 minutes until heated through. Cover with foil to retain moisture if needed.
Make Ahead Options
These Easy Gluten-Free Broccoli Chicken Divan Casserole components are perfect for meal prep enthusiasts! You can prepare the chicken, blanch the broccoli, and create the creamy sauce up to 24 hours in advance; just refrigerate everything separately to maintain freshness. When you’re ready to assemble, layer the chicken and broccoli in the baking dish, pour the sauce over, and top with cheddar and breadcrumbs. Bake as directed, adding an extra few minutes if needed, to ensure everything is heated through. This allows you to have a comforting, homemade meal ready in no time on busy weeknights, without compromising on flavor or quality!
Broccoli Chicken Divan Casserole Variations
Feel free to get creative with this comforting casserole, and let your taste buds guide you!
- Turkey Twist: Substitute chicken with leftover turkey for a tasty post-holiday remix that doesn’t go to waste.
- Veggie Delight: Try using a medley of vegetables like mushrooms and bell peppers to boost flavors and add nutrients. A colorful veggie mix can elevate the dish immensely!
- Dairy-Free: For a vegan option, replace the cheese with nutritional yeast and use coconut yogurt instead of mayo and sour cream. This keeps all the creaminess without any dairy.
- Heat It Up: Add diced jalapeños or a dash of hot sauce for a spicy kick that will please heat lovers in the family. Just a bit of spice can turn up the flavor a notch!
- Cauliflower Swap: Exchange broccoli for cauliflower to create a different texture while retaining that nutritious backbone. It’s a great way to mix things up!
- Gluten-Free Crunch: Use gluten-free breadcrumbs to make sure this casserole stays friendly for those avoiding gluten, all while keeping the crunch on top.
- Nut-Free: If allergies are a concern, simply omit the cheese or use nut-free substitutes for a safe and delightful dish that everyone can enjoy.
- Herb Infusion: Toss in fresh herbs such as thyme or rosemary within the sauce or topping to enchant your dish with delightful and aromatic flavors. Fresh herbs can make a world of difference!
Don’t forget to explore other comforting dishes like Buffalo Chicken Stuffed or Chicken Sausage Broccoli for more meal inspiration!
Expert Tips for Broccoli Chicken Divan Casserole
- Ingredient Swaps: Use leftover turkey, tofu, or chickpeas to make this dish suit your dietary preferences while enjoying the comforting goodness of Broccoli Chicken Divan Casserole.
- Avoid Watery Casserole: If using frozen broccoli, ensure to thaw and drain it to prevent excess moisture in the dish.
- Layering Order: Start with the chicken at the bottom to prevent it from drying out and allow the sauce to keep it moist.
- Garnish for Freshness: Adding fresh herbs like parsley or chives right before serving will elevate flavors and add a beautiful touch to your casserole.
- Watch Baking Time: Keep an eye on your casserole during the last few minutes in the oven to achieve that perfect golden topping without burning it.
What to Serve with Broccoli Chicken Divan Casserole
Embrace the warmth and comfort of a delicious meal by pairing your casserole with delightful side dishes that complement its rich flavors.
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Garlic Bread: Perfectly crispy and buttery, garlic bread offers a fragrant side that balances the creamy casserole beautifully. Each bite provides a delightful crunch that your family will love.
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Mixed Green Salad: A refreshing mix of greens, cucumbers, and cherry tomatoes tossed in a light vinaigrette adds a crisp element to your meal, balancing the richness of the casserole.
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Quinoa Pilaf: This protein-packed grain, seasoned with herbs and spices, elevates the dish while providing a lovely texture contrast against the creamy casserole.
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Steamed Asparagus: Tender asparagus spears dressed with lemon juice and a sprinkle of salt add a burst of freshness and color to your plate, enhancing the vibrant broccoli in the casserole.
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Roasted Sweet Potatoes: Their natural sweetness and caramelized flavor offer a delightful contrast to the savory casserole. Roasting brings out their unique taste while providing a comforting addition.
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Herbed Rice: Fluffy rice infused with fresh herbs acts as a delightful, subtle base that complements the flavorful layers of the Broccoli Chicken Divan Casserole, making each bite blissful.
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Fruit Salad: For a sweet finish, serve a light and juicy fruit salad. The natural sugars and tangy notes from the fruit provide a refreshing palate cleanser after the creamy casserole.
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Chardonnay: A chilled glass of Chardonnay can enhance the meal experience. Its buttery notes can complement the cheese sauce beautifully, making every sip a delight.

Broccoli Chicken Divan Casserole Recipe FAQs
What type of chicken works best for this recipe?
Absolutely! For the best texture and flavor, I recommend using cooked chicken breast, either poached or baked. If you have leftover chicken from another meal, that works perfectly too! Just shred or chop it into bite-sized pieces for even distribution in the casserole.
How should I store leftovers of Broccoli Chicken Divan Casserole?
It’s simple! Store any leftovers in an airtight container in the refrigerator for up to 3 days. This keeps the casserole fresh and delicious while maintaining its creamy texture.
Can I freeze the Broccoli Chicken Divan Casserole?
Yes, you can! To freeze, ensure the casserole is well-covered with plastic wrap or aluminum foil to prevent freezer burn. It can be stored in the freezer for up to 2 months. When you’re ready to enjoy it, thaw overnight in the refrigerator before reheating.
What should I do if my casserole turns out watery?
Very! If you find your casserole is watery, it might be due to using frozen broccoli without properly thawing and draining it first. Always thaw frozen veggies and drain any excess moisture to avoid a soggy dish. Another tip is to avoid using too much sauce; excess liquid can lead to a watery texture.
Are there any dietary considerations for this recipe?
Definitely! This Broccoli Chicken Divan Casserole can easily be made gluten-free by using certified gluten-free breadcrumbs. For a vegetarian option, feel free to substitute the chicken with tofu or chickpeas. It’s all about making the dish work for your needs while keeping it comforting and delicious!
How can I ensure the breadcrumbs stay crunchy?
To keep that satisfying crunch, I recommend sprinkling the breadcrumbs on top right before baking. If you’re reheating leftovers, you can pop it back in the oven for a few minutes to revive the texture. Enjoying this Broccoli Chicken Divan Casserole at its crispy best is a must!

Creamy Broccoli Chicken Divan Casserole You'll Crave
Ingredients
Equipment
Method
- Cook chicken breast until it reaches 165°F. Blanch broccoli in salted water for 2-3 minutes, then transfer to ice water.
- In a mixing bowl, combine mayonnaise, sour cream, Parmesan, lemon juice, mustard, garlic powder, onion powder, salt, and pepper. Whisk until smooth.
- Preheat oven to 350°F. Layer chicken in a baking dish, add broccoli, pour sauce over, and top with cheddar and breadcrumbs.
- Bake for 25-30 minutes until bubbly and golden brown.
- Let rest for 5 minutes before serving, optionally garnished with fresh herbs.

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