Pesto Chicken Mozzarella Rice Bake
Make this gluten-free pesto chicken mozzarella rice bake with shredded chicken, fresh spinach, cherry tomatoes, and bubbly cheese. Step-by-step, easy weeknight dinner.
My gluten-free pesto chicken mozzarella rice bake was born out of a desperate Tuesday evening when I had leftover rotisserie chicken, a jar of pesto, and absolutely no plan. I threw everything into a baking dish and crossed my fingers—and what came out of that oven stopped my whole family mid-conversation.
The moment you pull the foil off and see that golden, bubbling mozzarella blanketing herb-scented rice and tender chicken, you’ll understand why this became a permanent fixture in my dinner rotation. Every bite delivers creamy, herby richness with little pops of sweet tomato and wilted spinach tucked throughout.
You know… the best weeknight dinners aren’t the complicated ones—they’re the ones that taste like you worked harder than you did. This one comes together in one bowl, uses rice and chicken you likely already have, and bakes in under 40 minutes.
Why You’ll Love This Recipe
- One-bowl assembly, one baking dish — mix everything together, transfer, top with cheese, and bake. Minimal cleanup for a meal that tastes like it took real effort.
- Built for leftovers and meal prep — it reheats beautifully and holds up in the fridge all week, making it a go-to for batch cooking.
- Naturally adaptable — swap sour cream for Greek yogurt to lighten it up, or use dairy-free cheese and a plant-based pesto for a completely dairy-free version.
- Crowd-pleasing flavor profile — the basil pesto and melted mozzarella combo appeals to kids and adults equally, making it the cheesy gluten-free chicken pesto rice casserole everyone asks for again.
The Secret to Perfect Gluten-Free Pesto Chicken Mozzarella Rice Bake
A casserole this simple could easily go wrong—dry chicken, watery rice, rubbery cheese. Here’s why this one doesn’t.
- Certified gluten-free pesto is non-negotiable for anyone with celiac disease or gluten sensitivity. Many conventional pestos contain fillers or are processed on shared equipment. The Celiac Disease Foundation’s gluten-free food guidance makes clear that cross-contamination is a real risk even in seemingly safe products.
- Foil-first baking traps steam during the first 20 minutes, keeping the chicken moist and preventing the rice from drying out. Removing the foil for the final stretch allows the cheese to brown and bubble without overcooking the interior.
- Sour cream or Greek yogurt acts as a binder that emulsifies the pesto and juices from the tomatoes into a cohesive, creamy sauce—no separate sauce to make, no roux required.
- Dividing the mozzarella (one cup stirred in, half cup on top) gives you melty cheese woven throughout the casserole plus a golden, lightly crisp topping that contrasts beautifully with the creamy interior.
Table of Contents
Ingredients
This recipe serves 6 and uses mostly pantry staples. Pre-cooked rice and rotisserie chicken make it genuinely weeknight-fast.
Rice Bake
| Ingredient | Amount | Notes |
|---|---|---|
| Cooked white or brown rice | 3 cups | Day-old rice works best—less moisture |
| Cooked shredded chicken | 2 cups | Rotisserie chicken is a great shortcut |
| Shredded mozzarella cheese, divided | 1½ cups | 1 cup in batter, ½ cup for topping |
| Grated Parmesan cheese | ½ cup | Freshly grated melts more smoothly |
| Cherry tomatoes, halved | 1 cup | Roma or grape tomatoes also work |
| Baby spinach | 2 cups | Wilts down significantly during baking |
| Certified gluten-free basil pesto | ½ cup | Check label for GF certification |
| Sour cream or plain Greek yogurt | ½ cup | Greek yogurt adds a slight tang |
| Garlic, minced | 2 cloves | |
| Italian seasoning | 1 teaspoon | |
| Garlic powder | ½ teaspoon | |
| Kosher salt | ½ teaspoon | |
| Freshly ground black pepper | ¼ teaspoon |
Optional Garnishes
- Fresh basil leaves
- Extra grated Parmesan
- Red pepper flakes
- Balsamic glaze
Instructions
Prep the Oven and Dish
Step 1. Preheat the oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish so nothing sticks to the sides during baking.
Mix the Casserole
Step 2. In a large mixing bowl, combine the cooked rice, shredded chicken, 1 cup of the mozzarella cheese, Parmesan cheese, cherry tomatoes, spinach, basil pesto, sour cream, garlic, Italian seasoning, garlic powder, salt, and black pepper.
Step 3. Stir until all of the ingredients are evenly coated and well combined. The mixture should look uniformly green-flecked and creamy, with the spinach beginning to wilt from the warmth of the other ingredients.
Pro Tip: If your rice was refrigerated, let it sit at room temperature for 10 minutes before mixing. Cold rice can make the casserole take longer to heat through evenly.
Assemble and Bake
Step 4. Transfer the mixture to the prepared baking dish and spread it into an even layer, pressing gently into the corners so it bakes consistently throughout.
Step 5. Sprinkle the remaining ½ cup mozzarella cheese evenly over the top. This is your golden, bubbly crown—don’t skip it.
Step 6. Cover the dish loosely with aluminum foil and bake for 20 minutes. The foil traps steam that keeps the chicken and rice moist.
Step 7. Remove the foil and continue baking for 10–15 minutes, or until the cheese is melted, bubbly, and lightly golden. You’re looking for those irresistible caramelized edges that taste like the best part of a lasagna.
Pro Tip: If the cheese isn’t browning to your liking after 15 minutes uncovered, switch the oven to broil for 2–3 minutes. Watch it closely—mozzarella goes from golden to burnt quickly.
Rest and Serve
Step 8. Let the casserole rest for 5–10 minutes before serving. This resting time lets the creamy sauce settle and makes it much easier to scoop clean portions.
Step 9. Garnish with fresh basil, extra Parmesan, red pepper flakes, or a light drizzle of balsamic glaze if desired. Serve warm directly from the dish.
Make It Your Own
Well… this casserole is one of those recipes that bends to whatever you have in the fridge without complaining. Here are the swaps that work best.
Dairy-Free Version: Replace the mozzarella with a shredded dairy-free mozzarella alternative and use a coconut-based or cashew sour cream in place of regular. Make sure your pesto is also dairy-free—many traditional pestos contain Parmesan. The texture will be slightly less stretchy, but the herby flavor stays fully intact.
Brown Rice vs. White Rice: Both work well here. Brown rice adds a nuttier flavor and a heartier chew that holds up nicely in this easy gluten-free pesto chicken rice bake. White rice produces a softer, creamier result. Either way, make sure the rice is fully cooked before it goes into the bowl—this dish doesn’t cook raw rice.
Protein Swap: No cooked chicken on hand? Canned chickpeas, Italian sausage (certified gluten-free), or even cooked shrimp all work as substitutes. Shrimp in particular pairs beautifully with pesto and only needs about 8 minutes in the oven before it’s done, so reduce the uncovered bake time accordingly.
Vegetable Add-Ins: Stir in ½ cup of sun-dried tomatoes, artichoke hearts, or roasted zucchini alongside the spinach for extra depth. Frozen peas (no need to thaw) can also be folded in at Step 2 for a pop of color and sweetness. Avoid watery vegetables like raw mushrooms or zucchini—they release too much liquid and can make the casserole soupy.
Make It Spicier: Add ¼ teaspoon red pepper flakes directly into the casserole mixture at Step 2, in addition to any garnish flakes you add at the end. A tablespoon of jarred calabrian chili paste stirred into the pesto layer gives a serious kick that balances the richness of the cheese.
Common Problems & Solutions
Man, oh man… casseroles look forgiving until they’re not. Here’s what can go wrong and exactly how to fix it.
Problem: Casserole came out watery. Excess moisture usually comes from very fresh (not day-old) rice or from tomatoes releasing liquid during baking. Use day-old refrigerated rice when possible, and halve the cherry tomatoes so they have a chance to collapse and caramelize rather than steam. A tablespoon of Parmesan stirred in can also help absorb excess moisture.
Problem: Chicken tastes dry. Dry chicken in a casserole usually means it was overcooked before it went in, or the foil cover was skipped. The foil during the first 20 minutes is essential for keeping moisture locked in. For extra insurance, stir a tablespoon of olive oil into the mixture at Step 2—it coats the chicken and prevents it from drying out during the uncovered bake.
Problem: Cheese browned too fast but center was still cold. This happens when the rice was used straight from the fridge. Cold rice at the center takes longer to heat through than the cheese on top takes to brown. Let refrigerated rice come to room temperature before mixing, or add 5 minutes to the foil-covered baking time before removing it.
Problem: Pesto flavor was too subtle. Pesto’s herby brightness can get muted when baked. According to Serious Eats’ breakdown of pesto and heat, basil loses some of its aromatic compounds when exposed to prolonged oven temperatures. The fix is simple: reserve 1–2 tablespoons of fresh pesto to drizzle over the top just before serving for a bright, herbaceous finish that the oven can’t touch.
Storage & Meal Prep
| Method | Duration | Notes |
|---|---|---|
| Counter | 2 hours max | Do not leave dairy-based casseroles out longer |
| Fridge | 4–5 days | Airtight container; bring to room temp before reheating |
| Freezer | 2–3 months | Portion into individual servings before freezing |
To reheat from the fridge, cover with foil and warm in a 350°F oven for 15–18 minutes, or microwave individual portions covered for 2–3 minutes. Adding a small splash of chicken broth or water before reheating helps restore moisture.
This casserole is genuinely meal-prep gold. Make a full batch on Sunday, portion it into containers, and you have five weeknight dinners ready to go. It reheats without losing its creamy texture, which is rarer than you’d think in a casserole.
Leftover portions that are getting close to the end of their fridge life are wonderful stuffed into a gluten-free wrap or served over extra rice as a quick grain bowl lunch.
Pesto Chicken Mozzarella Rice Bake FAQs
Can I use uncooked rice in this recipe?
No—this recipe requires pre-cooked rice. Uncooked rice needs both time and liquid to absorb and cook through, and a 30-35 minute casserole bake doesn’t provide enough of either. Use leftover rice, microwavable rice pouches, or cook a batch ahead of time and refrigerate it overnight for best results.
How do I keep the casserole from drying out when reheating?
Add a tablespoon or two of chicken broth, water, or extra pesto before covering with foil and reheating at 350°F. This restores moisture that evaporated during the first bake and keeps the rice from turning hard. Individual portions reheat well in the microwave covered with a damp paper towel for the same reason.
What’s the best certified gluten-free pesto brand?
Several brands offer clearly labeled certified gluten-free pesto, including Rao’s Homemade and DeLallo. Always check the label for a certified gluten-free designation rather than relying on ingredients alone, since shared-facility cross-contamination is a real risk. Making your own pesto from scratch with fresh basil, pine nuts, olive oil, garlic, and Parmesan is another reliable option that gives you full control over every ingredient.
Can I assemble this casserole ahead of time?
Yes—assemble the casserole through Step 5, cover tightly with plastic wrap, and refrigerate for up to 24 hours before baking. Add 5-7 extra minutes to the foil-covered bake time since the dish will go into the oven cold. This makes it an excellent option for holiday gatherings like Christmas or Easter, where oven time is precious and you want to prep as much as possible the day before.
Why did my spinach turn mushy?
Two cups of baby spinach wilts down dramatically during baking, which is expected and desirable here. If it turned unpleasantly mushy, the casserole likely baked too long or had excess moisture from other ingredients. Stick to the timing guidelines, use day-old rice, and halve your cherry tomatoes to manage liquid. If you prefer more texture, stir the spinach in after baking rather than before.
Serving Suggestions
This casserole is a full meal on its own, but it pairs nicely with a crisp green salad dressed in lemon vinaigrette to cut through the richness. Warm gluten-free focaccia or a crusty gluten-free baguette alongside makes it feel like a proper sit-down dinner.
For dessert after a savory, herb-forward dinner like this, something sweet and simple works beautifully. Try our gluten-free apple butter blondie bars for a warm, spiced finish, or our s’mores granola butter rice bars if you want something the kids can grab with their hands.
Craving something to snack on while this bakes? Our Dubai chocolate Korean chewy cookies are a fun, crowd-pleasing treat to have waiting on the counter.
If you give this recipe a try, I’d genuinely love to hear how it went—drop a comment below with any swaps you made or your family’s reaction. And if it earned a spot in your regular rotation, save it to Pinterest so you can find it again when that Tuesday-night “what’s for dinner” panic sets in.
Gluten-Free Pesto Chicken Mozzarella Rice Bake
Equipment
- 9×13 inch baking dish
- Large mixing bowl
- Mixing spoon
- Measuring cups and spoons
- Aluminum foil
Ingredients
Rice Bake
- 3 cups cooked white or brown rice day-old preferred
- 2 cups cooked shredded chicken rotisserie chicken works well
- 1 ½ cups shredded mozzarella cheese divided
- ½ cup grated Parmesan cheese
- 1 cup cherry tomatoes halved
- 2 cups baby spinach
- ½ cup gluten-free basil pesto certified gluten-free
- ½ cup sour cream or plain Greek yogurt
- 2 cloves garlic minced
- 1 teaspoon Italian seasoning
- ½ teaspoon garlic powder
- ½ teaspoon kosher salt
- ¼ teaspoon black pepper freshly ground
Optional Garnishes
- fresh basil leaves optional
- extra grated Parmesan optional
- red pepper flakes optional
- balsamic glaze optional
Instructions
- Preheat the oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish.
- In a large bowl, combine the cooked rice, shredded chicken, 1 cup mozzarella, Parmesan, cherry tomatoes, spinach, pesto, sour cream or Greek yogurt, garlic, Italian seasoning, garlic powder, salt, and black pepper.
- Stir until all ingredients are evenly coated and well combined.
- Transfer the mixture to the prepared baking dish and spread into an even layer.
- Sprinkle the remaining 1/2 cup mozzarella cheese evenly over the top.
- Cover loosely with aluminum foil and bake for 20 minutes.
- Remove the foil and continue baking for 10 to 15 minutes until the cheese is melted, bubbly, and lightly golden.
- Let the casserole rest for 5 to 10 minutes before serving.
- Garnish with fresh basil, extra Parmesan, red pepper flakes, or balsamic glaze if desired, then serve warm.
