
This filling casserole blends store-bought rotisserie chicken with tangy chive and onion cream cheese, wilted spinach, and a bubbly mozzarella crust. It's a satisfying meal that balances quick preparation with homemade taste. What started as a Thursday night dinner solution using leftover chicken and aging spinach has turned into our go-to family dish that sneaks in veggies even the pickiest family members wolf down.
We stumbled upon this recipe during one hectic week when we needed fast, filling dinners. Our fridge clean-out experiment quickly became everyone's dinner request. The smooth, creamy sauce paired with spinach's subtle earthiness creates a combo that's hard to turn down, even for folks who normally push their greens around the plate.
Smart Ingredient Choices
- Rotisserie chicken: Delivers pre-cooked protein with deep flavors you'd need hours to create at home
- Chive and onion cream cheese: Makes a silky foundation with built-in flavoring that spreads throughout every bite
- Frozen spinach: Saves prep time and packs nutritional punch while keeping its structure when baked
- Cheese blend: Mixing part-skim mozzarella with parmesan gives you perfect melt factor and a crispy, golden top
Putting It All Together
- Getting started:
- Heat your oven to 375°F and lightly coat a 9x13 baking dish with oil for smooth serving later.
- Building flavors:
- In a big skillet, melt butter over medium heat, then toss in chopped onions until they turn clear, roughly 3-4 minutes. Throw in minced garlic and cook until you smell that wonderful aroma.
- Making your sauce:
- Dust flour over the butter mix, stirring non-stop for a minute to get rid of that raw flour taste. Slowly pour milk in while whisking to avoid lumps, creating a smooth base.
- Mixing everything:
- When the sauce gets thick, add small chunks of cream cheese, letting each bit melt before adding more. Mix in your chicken, cooked rice, and thawed spinach, making sure everything's evenly blended.
- Topping it off:
- Spoon the mixture into your dish and cover with a thick layer of mozzarella and parmesan. Bake for 25-30 minutes until it bubbles around the edges with a golden top.
- Getting that perfect crust:
- For an extra pretty finish, broil for 2-3 minutes, but watch it closely so you get that beautiful brown top without burning it.

My grandma taught me the nutmeg trick when I was just a kid watching her make creamed spinach. It adds this subtle warmth that makes everything taste better without standing out. When my kids rave about how good the spinach tastes in this dish, I just smile knowing our little family secret is working its magic.
Health Perks
This casserole isn't just tasty—it's good for you too. The chicken gives you protein, the cheese delivers calcium, and spinach packs vitamins galore. You'll get iron, vitamin K, and fiber from the spinach, while dairy adds calcium and vitamin D. All these ingredients work together to keep your bones strong, your muscles working right, and your body happy, showing that food can taste amazing and be nutritious at the same time.
What To Serve With It
Try pairing this dish with a simple green salad drizzled with lemon juice and olive oil. The tangy freshness cuts through the richness perfectly. If you want something heartier, go for some crusty garlic bread or a side of roasted veggies to round things out. In winter months, this casserole stands on its own just fine, giving you everything you need in one bowl.
Make It Your Own
You can tweak this recipe all kinds of ways. Watching your carbs? Swap the rice for riced cauliflower. Don't eat meat? Replace chicken with sautéed mushrooms and chickpeas for that meaty feel without actual meat. Feel free to play with different cheeses too—smoked gouda adds amazing depth, while fontina melts like a dream. Each change keeps the basic idea intact but gives you a whole new taste experience.
Dealing With Extras
Got leftovers? Pop them in a sealed container in the fridge for up to three days. When you warm them up, add a splash of milk to keep things creamy, then cover with foil and heat in a 325°F oven until hot throughout. Or divide leftovers into lunch-sized portions for quick meals all week. The flavors usually get even better after a night in the fridge, so tomorrow's lunch might taste even yummier than tonight's dinner.
I've learned over time that comfort food doesn't need fancy techniques to be amazing. What starts as a practical way to use up leftovers becomes something you'd proudly serve to guests. The real magic happens when you pull it from the oven, all bubbly around the edges with that golden top, promising a cozy, satisfying meal with every bite.

Frequently Asked Questions
- → Can I swap frozen spinach for fresh?
- Sure! Use about 2 pounds of fresh spinach. Cook it down first, drain the excess liquid, and chop it up before mixing into the dish.
- → How do I make this gluten-free?
- Easy fix! Swap regular flour with gluten-free options like rice flour, cornstarch, or a gluten-free blend. Use the same amounts in the recipe.
- → Can I try different cheeses?
- Definitely! Switch up the mozzarella with cheddar, Gruyère, Monterey Jack, or mix them. Just stick with ones that melt nicely.
- → Can I make this ahead of time?
- Absolutely. Prepare everything up until baking, cover, and refrigerate for up to a day. Let it sit out 30 minutes before baking, then bake as usual, adding an extra 10 minutes.
- → What sides go well with this?
- This is hearty alone, but pairs well with a green salad, steamed veggies like broccoli, or crusty bread. Go lighter with smaller portions and a big salad.