Creamy Pesto Chicken Pasta Bake

I’ve been making this creamy pesto chicken pasta bake on busy weeknights for years — it’s an easy crowd-pleaser that feels a little fancy without a lot of fuss. Tender chicken, pillowy pasta, bright basil pesto and two kinds of cheese bake up into a bubbling casserole with crisped edges. It’s great for family dinners, potlucks, or when you want leftovers that reheat beautifully. If you like rich, oven-baked chicken dishes, you might also enjoy this creamy oven-baked chicken thighs recipe which follows a similar comfort-food vibe.

Why you’ll love this dish

This casserole hits several marks at once: it’s quick to assemble, uses pantry-friendly ingredients, and feels indulgent without being complicated. The pesto gives a fresh herbaceous lift so the dish never tastes heavy. It’s kid-approved and works well for feeding a crowd — double the batch and you’ve got an easy make-ahead option. Make it on a weeknight when you want something warm and filling, or bring it to a casual gathering; it travels and reheats very nicely.

“Comfort food with a green twist — creamy, cheesy, and the basil pesto keeps it bright.” — a family favorite

Step-by-step overview

Start by preheating the oven and cooking the pasta to just al dente. Sear seasoned chicken in a skillet until cooked through, then slice. In a large bowl mix pasta, sliced chicken, baby spinach, pesto, cream, milk, and cheeses until everything is evenly coated. Transfer to a baking dish, top with remaining Parmesan, and bake until bubbling and golden. Let the casserole rest a few minutes before serving so it sets and slices cleaner.

What you’ll need

• 2 medium boneless skinless chicken breasts
• 3 1/2 oz baby spinach
• 2 cloves garlic, minced
• 1/2 cup basil pesto (store-bought or homemade)
• 10 1/2 oz penne or rigatoni pasta
• Salt and freshly ground black pepper
• 1 tbsp olive oil
• 1 tbsp unsalted butter
• 7/8 cup heavy cream
• 1/2 cup whole milk
• 1 cup shredded mozzarella cheese
• 1 cup grated Parmesan cheese

Notes and substitutions: use gluten-free pasta if needed, swap whole milk for a lower-fat milk if desired (result will be slightly less rich), and use a light or dairy-free cheese alternative for a dairy-free version (though texture and flavor will change).

Directions to follow

1. Preheat the oven to 375°F (190°C). Grease a 9×13-inch or similarly sized baking dish.
2. Cook the pasta according to package instructions until al dente. Drain and set aside.
3. In a skillet over medium heat, warm the olive oil and butter until the butter melts. Add the minced garlic and sauté for 30–45 seconds until fragrant.
4. Season the chicken breasts with salt and freshly ground black pepper. Add them to the skillet and cook until browned and cooked through, about 6–8 minutes per side depending on thickness. (Use an instant-read thermometer; the internal temperature should reach 165°F / 74°C.) Remove from the skillet and let rest for a few minutes, then slice into pieces.
5. In a large mixing bowl, combine the cooked pasta, sliced chicken, baby spinach, basil pesto, heavy cream, milk, shredded mozzarella, and half of the grated Parmesan. Stir until everything is evenly coated and the spinach begins to wilt.
6. Transfer the mixture to the greased baking dish and spread it into an even layer.
7. Sprinkle the remaining Parmesan over the top. For a crisper top, you can add an extra handful of mozzarella.
8. Bake in the preheated oven for 25–30 minutes, or until the top is golden and the sauce is bubbling around the edges.
9. Let the bake rest for 5 minutes before serving so the sauce thickens slightly and slices hold together.

Best ways to enjoy it

Serve generous scoops straight from the baking dish with a sprinkle of extra Parmesan and a few torn basil leaves for freshness. Pair it with a simple green salad dressed with lemon vinaigrette or roasted seasonal vegetables. For a lighter contrast, a crisp cucumber and radish salad works well. If you want another creamy baked chicken idea for variety, check out this creamy oven-baked chicken thighs recipe which also pairs beautifully with rustic sides.

Storage and reheating tips

• Refrigerate leftovers in an airtight container within two hours of baking. They keep 3–4 days.
• To reheat, warm individual portions in the microwave for 2–3 minutes, stirring halfway through, or reheat a larger portion in a 350°F (175°C) oven covered with foil for 15–20 minutes until heated through.
• To freeze: cool completely, then transfer to a freezer-safe container for up to 2 months. Thaw overnight in the refrigerator and reheat as above.
• Food safety tip: always reheat to an internal temperature of 165°F (74°C) before serving.

Helpful cooking tips

• Don’t overcook the pasta in the pot; aim for firm-to-the-bite (al dente) since it will continue to soften in the oven.
• Use an instant-read thermometer to ensure the chicken reaches 165°F (74°C) without drying out.
• Let cooked chicken rest for a few minutes before slicing to retain juices.
• If your pesto is very thick, stir it into the cream first to loosen it and distribute the herb flavor evenly.
• Leftover sauce can be loosened with a splash of milk or reserved pasta water if it seems too thick after baking.

Creative twists

• Veggie-forward: swap sliced chicken for roasted mushrooms and artichoke hearts for a vegetarian-friendly bake (use a plant-based cream and cheese if needed).
• Lemon-pesto: add 1–2 tsp lemon zest to the filling for a bright, citrusy lift.
• Sun-dried tomato pesto: mix in chopped sun-dried tomatoes for a sweet-tangy contrast.
• Protein swap: use shredded cooked turkey or rotisserie-style chicken for a shortcut.
• Crunchy topping: mix panko with a little olive oil and extra Parmesan and sprinkle on top for added texture.

Common questions

Q: How long does this take from start to finish?
A: Plan on about 45–60 minutes total: 10–15 minutes prep, 10–12 minutes to cook pasta and chicken, plus 25–30 minutes in the oven.

Q: Can I make this ahead of time?
A: Yes. Assemble the casserole, cover tightly, and refrigerate for up to 24 hours before baking. Add a few extra minutes to the bake time if starting cold from the fridge.

Q: Can I use rotisserie or pre-cooked chicken?
A: Absolutely. Shredded or diced cooked chicken cuts prep time; fold it into the pasta mixture and reduce bake time slightly until heated through.

Q: Will the pasta get mushy if I bake it?
A: Avoid mushy pasta by cooking to al dente and not overmixing. The short bake time and resting period help the dish set without turning the pasta to mush.

Q: Can I make this gluten-free or dairy-free?
A: Use certified gluten-free pasta for a gluten-free version. For dairy-free, use plant-based cream, milk alternatives, and dairy-free cheese; texture and flavor will differ but it’s doable.

Q: Is pesto safe to use from a jar?
A: Yes, shelf-stable jarred pesto is fine and convenient. For the freshest flavor, taste and adjust salt before mixing; store-bought pesto often has a higher salt content.

Conclusion

For a full recipe source and another take on this flavorful casserole, see this detailed Creamy Pesto Chicken Pasta Bake | Bad Batch Baking guide.

Print