Looking for an easy chicken casserole that’s creamy, comforting, and full of flavor? This Creamy Boursin Chicken Casserole with Spinach, Garlic & Parmesan combines tender chicken, creamy Boursin cheese, spinach, garlic, Parmesan, and pasta in one cozy baked dish.

Wanting another Boursin Cheese recipe? Try my Creamy Salmon Boursin Cheese creation!

Boursin cheese does most of the heavy lifting in this recipe, creating a rich garlic-and-herb cream sauce without needing a long list of ingredients. Everything comes together in a casserole dish and bakes until hot, bubbly, and golden around the edges.

It’s an easy weeknight dinner that feels a little more special than an ordinary chicken casserole.

Why You’ll Love This Boursin Chicken Casserole

• Easy weeknight dinner — simple ingredients and minimal prep.
• Rich and creamy — Boursin creates an incredibly flavorful sauce.
• Family-friendly — tender chicken, pasta, and a creamy sauce make this a comforting meal.
• One-dish comfort food — fewer dishes means easier cleanup.
• Great for leftovers — the casserole reheats beautifully with a splash of milk or cream.

How to Make Boursin Chicken Casserole

1. Cook the Chicken

Preheat oven to 375°F (190°C).

Heat the olive oil in a large skillet over medium-high heat. Add the diced chicken and season with salt, pepper, and Italian seasoning.

Cook for approximately 5–7 minutes, stirring occasionally, until the chicken is lightly golden and cooked through.

Remove the chicken from the skillet and set aside.

2. Make the Creamy Boursin Sauce

Reduce the heat to medium.

Add the diced onion to the same skillet and cook for 2–3 minutes until softened. Add the minced garlic and cook for another 30 seconds.

Pour in the chicken broth and heavy cream. Stir in the Boursin cheese and Parmesan.

Continue stirring until the Boursin melts into the sauce and everything becomes smooth and creamy.

3. Add the Spinach

Add the fresh spinach to the sauce and cook for 1–2 minutes, just until wilted.

Return the cooked chicken to the skillet and stir everything together.

4. Add the Pasta

Add the cooked pasta and toss until it is completely coated in the creamy Boursin sauce.

If the sauce seems too thick, add a small splash of chicken broth or milk.

5. Assemble the Casserole

Transfer the mixture to a lightly greased 9×13-inch baking dish.

Sprinkle the mozzarella evenly over the top.

6. Bake

Bake uncovered for 20–25 minutes, or until the casserole is hot and bubbling and the cheese is melted.

For a more golden top, place the casserole under the broiler for 1–2 minutes at the end, watching carefully.

Let the casserole rest for about 5 minutes before serving.

Garnish with fresh parsley, Parmesan, and freshly cracked black pepper.

What Is Boursin Cheese?

Boursin is a soft, creamy cheese that is flavored with herbs, garlic, and other seasonings. Its creamy texture makes it especially useful for creating quick sauces for pasta, chicken, vegetables, and casseroles.

For this recipe, the Garlic & Fine Herbs variety works particularly well because it adds both creaminess and seasoning to the sauce.

Can I Use a Different Boursin Flavor?

Yes. While Garlic & Fine Herbs is my first choice for this chicken casserole, you can experiment with other Boursin varieties depending on what’s available.

Keep in mind that changing the flavor will change the overall seasoning of the casserole.

Can I Make This Chicken Casserole Ahead of Time?

Yes.

Assemble the casserole without baking it, cover tightly, and refrigerate for up to 24 hours.

When you’re ready to bake it, remove it from the refrigerator while the oven preheats. You may need to add approximately 5–10 minutes to the baking time.

How to Store Leftover Boursin Chicken Casserole

Store leftovers in an airtight container in the refrigerator for up to 3–4 days.

The sauce may thicken as it cools. When reheating, add a small splash of milk or chicken broth before warming to bring some of the creaminess back.

What to Serve with Boursin Chicken Casserole

Because this casserole is rich and creamy, I like serving it with something fresh or crisp.

Try:

• A simple green salad
• Garlic bread
• Crusty French bread
• Roasted broccoli
• Green beans
• Caesar salad

Recipe Tips

Don’t overcook the chicken. The chicken will be added back to the casserole before baking, so cook it just until done.

Use freshly grated Parmesan. It melts more smoothly into the Boursin sauce.

Don’t skip the spinach. It adds color, freshness, and an easy serving of vegetables.

Adjust the sauce before baking. If it looks overly thick, add a splash of chicken broth or milk.

Let it rest before serving. Five minutes allows the sauce to settle and makes the casserole easier to serve.

Creamy Boursin Chicken Casserole FAQ

Can I use rotisserie chicken?

Yes. Shredded rotisserie chicken can be substituted for the cooked chicken breasts. Simply stir the shredded chicken into the finished Boursin sauce before adding the pasta.

Can I use frozen spinach?

Yes. Thaw the spinach completely and squeeze out as much excess moisture as possible before adding it to the sauce.

Can I make this without pasta?

Absolutely. For a lower-carb version, replace the pasta with roasted cauliflower, broccoli, or a mixture of your favorite vegetables.

Can I freeze Boursin chicken casserole?

For the best texture, I recommend enjoying this casserole fresh or refrigerated rather than freezing it. Cream-based sauces can sometimes separate after freezing and reheating.

What kind of pasta works best?

Penne, rotini, rigatoni, and bow-tie pasta all work well because their shapes hold onto the creamy Boursin sauce.

More Cozy Casserole Recipes

If you love creamy, comforting casseroles, try these next:

[Boursin Salmon Casserole Recipe]

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