The aroma of baked cheese wafted through my kitchen, instantly transporting me back to family gatherings where comfort food reigned supreme. Today, I’m thrilled to share my twist on a beloved classic, the Cheesy Chicken, Rice & Cauliflower Rice Casserole. This dish marries tender shredded chicken with over 3½ cups of riced cauliflower and three cups of spinach, all enveloped in a creamy, cheesy sauce that your loved ones won’t even realize is veggie-loaded. It’s a fantastic way to sneak in extra nutrients while still satisfying those who crave a hearty meal. Plus, it’s as easy to whip up on a weeknight as it is to impress guests at your next get-together. Are you ready to dive into creamy goodness? Let’s get cooking!

Why is this casserole a must-try?
Flavorful, hearty goodness: This Cheesy Chicken, Rice & Cauliflower Rice Casserole delivers a scrumptious blend of flavors that even picky eaters will love!
Easy to prepare: With straightforward steps and minimal prep, you can have this dish ready in no time, perfect for busy weeknights.
Veggie power: By incorporating riced cauliflower and spinach, this casserole sneaks in nutrients without compromising on taste, making it a family favorite.
Versatile options: Feel free to customize with your choice of protein or add in more veggies like broccoli for extra crunch. For similar delicious recipes, check out Chicken Enchilada Casserole or Corn Chicken Rice.
Crowd-pleasing comfort food: The creamy, cheesy top and tender chicken ensure that every bite leaves everyone asking for more!
Chicken & Rice Casserole Ingredients
• A deliciously comforting dish awaits you!
For the Casserole
- Avocado Oil – Essential for sautéing, providing moisture; substitute with any neutral oil if preferred.
- Onion (½ medium, diced) – Adds flavor depth and sweetness to the base.
- Frozen Riced Cauliflower (12 oz / 3½ cups) – Acts as the primary veggie boost to the casserole; fresh can be used but may require less cooking time.
- Kosher Salt (1 tsp) – Enhances overall flavor; adjust to taste for your family’s preference.
- Ground Black Pepper (½ tsp) – Adds a subtle kick; increase if you enjoy more spice.
- Garlic (3 cloves, minced) – Infuses aromatic depth into the dish.
- Milk (½ cup, low fat) – Brings creaminess to the sauce; feel free to use any dairy or non-dairy milk.
- Garlic Powder (½ tsp) – For an extra layer of garlic flavor in the mix.
- Italian Seasoning (1½ tsp) – Adds a delightful herbal blend; can replace with individual herbs like oregano or thyme for a personal touch.
- Dijon Mustard (1 tbsp) – Introduces a tangy flavor that lifts the dish.
- Cream Cheese (4 tbsp) – Thickens the sauce while adding creamy texture; Greek yogurt can be a healthier substitute.
- Plain Greek Yogurt (½ cup) – Also enhances creaminess; sour cream can be used instead if preferred.
- Baby Spinach (3 cups, roughly chopped) – Contributes nutrients and beautiful color; other leafy greens like kale can also work.
- Cooked & Shredded Chicken (3 cups) – Main protein source that keeps the dish hearty; rotisserie chicken makes for a convenient option.
- Cooked White Jasmine Rice (1½ cups) – Gives the casserole delightful texture; consider using brown rice for added fiber and nuttiness.
- Shredded Cheddar Cheese (¾ cup) – Provides that gooey, melty topping; vegan cheese is a great alternative if you’re looking to keep it dairy-free.
Step‑by‑Step Instructions for Cheesy Chicken, Rice & Cauliflower Rice Casserole
Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C) while you prepare your casserole dish. Lightly grease a 9×13 inch casserole dish with avocado oil or cooking spray to prevent sticking. This will ensure your cheesy chicken, rice & cauliflower rice casserole bakes evenly and the cheesy topping comes out perfectly golden.
Step 2: Sauté the Onions
In a large pot or Dutch oven, heat 2 tablespoons of avocado oil over medium-high heat. Add the diced onion and sauté for about 3-4 minutes, stirring occasionally until the onions turn translucent and fragrant. This step helps build a flavorful base for your casserole, making it a fantastic start to your dish.
Step 3: Cook the Cauliflower
Next, stir in 3½ cups of frozen riced cauliflower, along with 1 teaspoon of kosher salt and ½ teaspoon of ground black pepper. Cook for 10-12 minutes, stirring frequently, until the cauliflower is tender and lightly golden. This will create a delightful veggie-packed layer in your cheesy chicken, rice & cauliflower rice casserole.
Step 4: Add Garlic
Now, add 3 minced garlic cloves to the pot and cook for an additional 1 minute until fragrant. Stir continuously to prevent the garlic from burning, as it will contribute a lovely aromatic flavor to your mixture, enhancing the overall taste of your casserole.
Step 5: Combine the Sauce Ingredients
Lower the heat and incorporate ½ cup of milk, ½ teaspoon of garlic powder, 1½ teaspoons of Italian seasoning, and 1 tablespoon of Dijon mustard into the pot. Add 4 tablespoons of cream cheese and ½ cup of plain Greek yogurt, stirring until smooth and combined. Toss in 3 cups of roughly chopped baby spinach, mixing until it wilts beautifully.
Step 6: Incorporate Chicken and Rice
Gently fold in 3 cups of cooked, shredded chicken and 1½ cups of cooked white jasmine rice. Mix thoroughly to ensure the chicken and rice are evenly distributed throughout the creamy sauce. This step not only adds protein but also gives texture to your cheesy chicken, rice & cauliflower rice casserole.
Step 7: Assemble the Casserole
Transfer the entire mixture into the greased casserole dish, spreading it out evenly. Make sure to level the surface for even cooking. This step is crucial as it will allow your casserole to bake perfectly, resulting in a satisfying meal.
Step 8: Add Cheese and Bake
Top your casserole with ¾ cup of shredded cheddar cheese, ensuring even coverage for that gooey, melty topping. Cover the dish with foil and bake in the preheated oven for 25 minutes. This allows the flavors to meld beautifully while the cheese begins to melt and bubble.
Step 9: Broil for a Golden Finish
After baking, carefully remove the foil and set the oven to broil. Broil the casserole for 2-3 minutes, watching closely until the cheese is golden and bubbly. This final touch creates a beautifully crisp topping, taking your cheesy chicken, rice & cauliflower rice casserole to the next level of deliciousness.

Expert Tips for Chicken & Rice Casserole
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Texture Check: Ensure your riced cauliflower is well-cooked to prevent excess water, which can lead to a soggy casserole. A quick sauté will set the right foundation.
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Veggie Customization: Feel free to add extra veggies like bell peppers or broccoli. Just remember to adjust the sauce to maintain its creamy consistency for a perfect chicken & rice casserole.
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Make Ahead: If you’re prepping in advance, consider storing the sauce and casserole components separately. This helps retain texture; combine and bake on the day of serving for best results.
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Cheese Alternatives: Switch out cheddar for your favorite cheese, including vegan options, to make your casserole fit dietary needs without losing flavor.
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Protein Variations: Don’t hesitate to swap the chicken for ground turkey or beef according to taste preferences; this simple change can breathe new life into the dish!
Chicken & Rice Casserole Variations
Feel free to play with the flavors and ingredients in this casserole to make it your own!
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Protein Swap: Replace shredded chicken with ground turkey or beef for a hearty twist. The richness will really shine through, and your family will love the change!
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Quinoa Alternative: Use quinoa instead of white rice for a nutty flavor and extra protein boost. This swap not only changes the texture but also introduces a delightful nuttiness.
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Cheesy Goodness: Experiment with different cheeses like mozzarella or pepper jack for a unique flavor. Each cheese brings a different melt and stretch that can elevate your casserole!
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Vegetable Upgrade: Add in chopped broccoli or bell peppers to enhance the veggie content. These colorful additions not only taste great but also make your casserole more vibrant.
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Dairy-Free Delight: Substitute cream cheese and milk with dairy-free alternatives like cashew cream and almond milk. This creates a creamy texture that’s friendly for those avoiding dairy.
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Spice it Up: For a spicy kick, incorporate crushed red pepper flakes or diced jalapeños into your mix. It adds a nice warmth that can wake up the flavors without overwhelming the dish.
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Herb Infusion: Replace Italian seasoning with fresh herbs like thyme or rosemary for an aromatic twist. Fresh herbs can bring a bright, robust flavor that elevates the whole meal.
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Saucy Variation: Use a can of condensed cream of mushroom soup instead of the sauce for a different flavor base. This shortcut can save time and add an umami punch to your casserole!
No matter which variation you choose, making this casserole personal is part of the fun. For more delicious options, consider giving a try to my Chicken Enchilada Casserole or the satisfying Corn Chicken Rice!
How to Store and Freeze Cheesy Chicken, Rice & Cauliflower Rice Casserole
Fridge: Store leftovers in an airtight container for up to 4 days. To enjoy the cheesy chicken & rice casserole at its best, reheat in the oven or microwave until warmed through.
Freezer: For longer storage, freeze the casserole for up to 3 months. Make sure to cool completely, then wrap tightly in plastic wrap or foil before placing it in a freezer-safe container.
Reheating: Thaw in the fridge overnight before reheating. Bake at 350°F (175°C) until heated through, or heat individual servings in the microwave, adding a splash of milk to keep it creamy.
Layer Separation: If you prefer, you can also freeze the sauce and casserole components separately to maintain texture and flavors. Combine them just before baking for a fresh, delightful meal.
Make Ahead Options
Preparing the Cheesy Chicken, Rice & Cauliflower Rice Casserole ahead of time is a fantastic way to save time on busy weeknights! You can mix the casserole components (including the creamy sauce and veggies) up to 24 hours in advance. Simply keep the mixture covered in the refrigerator to maintain freshness. For best results, store the shredded chicken and rice separately to prevent sogginess. When you’re ready to bake, transfer everything to a greased casserole dish, top with cheddar cheese, and bake immediately. This ensures your casserole comes out just as delicious and comforting, ready to impress your family with minimal effort!
What to Serve with Cheesy Chicken, Rice & Cauliflower Rice Casserole
A warm, comforting meal is only complete when paired with complementary sides that enhance its deliciousness.
- Garlic Bread: The crunchy, buttery texture of garlic bread perfectly contrasts the creaminess of the casserole, making each bite explode with flavor.
- Mixed Green Salad: A fresh salad with tangy vinaigrette adds a crisp, refreshing element, balancing the richness of the cheesy chicken casserole. Toss in cherry tomatoes and cucumber for extra crunch!
- Roasted Vegetables: Seasoned roasted veggies like carrots and zucchini offer a delightful textural contrast and enhance the meal’s nutritional value. The caramelization brings out their natural sweetness!
- Steamed Broccoli: Tender, steamed broccoli is not only nutritious but also provides a nice bite, making it a colorful and delicious addition to your dinner plate.
- Quinoa Pilaf: A fragrant quinoa pilaf with herbs and nuts introduces a lovely nuttiness and a wholesome kick, elevating your casserole experience.
- Crisp Apple Slices: For a sweet ending or snack, serve crunchy apple slices— the refreshing sweetness complements the savory richness of the casserole beautifully.
- Sparkling Water with Lemon: Quenching your thirst with bubbly water infused with lemon adds a refreshing twist that complements the creamy, hearty casserole without overwhelming the flavors.

Cheesy Chicken, Rice & Cauliflower Rice Casserole Recipe FAQs
How do I select ripe cauliflower?
Absolutely! When choosing cauliflower, look for heads that are firm, compact, and free of dark spots or blemishes. The leaves should be green and fresh-looking, which indicates freshness. Avoid any cauliflower with signs of yellowing or softness as it may be past its prime.
What are the best storage methods for leftovers?
For the best quality, store your cheesy chicken, rice, and cauliflower rice casserole in an airtight container in the refrigerator. It will stay fresh for up to 4 days. When reheating, I recommend using the oven for even heating, which helps retain that gooey texture!
Can I freeze this casserole, and how should I do it?
Yes, you can! To freeze, let the casserole cool completely after baking. Then, wrap it tightly in plastic wrap or aluminum foil and place it in a freezer-safe container. This way, it will keep well for up to 3 months. Remember to label it with the date for easy tracking.
What if my casserole turns out too watery?
If you find your casserole is too watery, it might be due to excess moisture from the veggies. To remedy this, ensure you cook the riced cauliflower thoroughly before combining it with the other ingredients. A quick sauté can help reduce moisture; just cook until it’s lightly golden and tender.
Are there any allergy considerations for this recipe?
Very! This casserole is nut-free and can be made gluten-free by ensuring all ingredients like the Dijon mustard and milk alternatives are certified gluten-free. If you’re making it for someone with allergies, consider double-checking labels and using dairy alternatives like almond or coconut milk.
What’s the best way to store components if I want to prep ahead?
If you’re prepping ahead, I recommend storing the sauce and casserole components separately. Keep the cooked chicken, riced cauliflower mixture, and cheese in separate containers to maintain texture. On the day of baking, simply combine them in your casserole dish and bake as directed!

Creamy Chicken & Rice Casserole Loaded with Veggies
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C) and grease a 9x13 inch casserole dish with avocado oil.
- Heat 2 tablespoons of avocado oil in a large pot, add diced onion, and sauté for 3-4 minutes until translucent.
- Stir in frozen riced cauliflower, kosher salt, and ground black pepper. Cook for 10-12 minutes until tender.
- Add minced garlic and cook for an additional 1 minute until fragrant.
- Lower the heat and mix in the milk, garlic powder, Italian seasoning, Dijon mustard, cream cheese, and Greek yogurt until smooth.
- Fold in cooked, shredded chicken and cooked jasmine rice, mixing to combine.
- Transfer the mixture into the greased casserole dish, spreading evenly.
- Top with cheddar cheese, cover with foil, and bake for 25 minutes.
- Remove foil and broil for 2-3 minutes until cheese is golden and bubbly.







