Chicken Stuffed Shells

Comfort food that feels like a warm hug on a plate: these Chicken Stuffed Shells are cheesy, saucy, and impossibly satisfying. Tender chunks of chicken mingle with creamy ricotta and a hit of Parmesan, all tucked into jumbo pasta shells and bathed in your favorite marinara. It’s a weeknight-friendly bake that doubles as a crowd-pleasing dinner for guests. Follow the clear, step-by-step directions below and you’ll have a bubbling casserole full of rich flavors in under an hour.

Why you’ll love this version

This recipe balances ease and flavor. Using simple pantry ingredients like jumbo pasta shells and jarred marinara keeps prep time low, while the combination of ricotta and Parmesan gives the filling a silky, satisfying texture. Cubed chicken breast cooks quickly in a skillet with a little olive oil, then combines with the cheeses and Italian seasoning to make a hearty filling that stands up to the robust marinara sauce. If you love cheesy pasta bakes, this one is pure comfort.

Ingredients

• ▢1 tablespoon olive oil
• ▢1 pound boneless, skinless chicken breasts cubed
• ▢12 ounces dry jumbo pasta shells (1 box)
• ▢15 ounces ricotta cheese
• ▢5 ounces Parmesan cheese shredded and divided
• ▢1 tablespoon Italian seasoning
• ▢24 ounces marinara sauce (1 jar)

Equipment

• Large pot for boiling pasta
• Large skillet
• Mixing bowl
• 9×13-inch baking dish (or similar)
• Oven mitts and a spatula or spoon

Prep and timing

• Active time: about 25–35 minutes
• Total time: about 45–55 minutes, including baking
• Makes: about 4–6 servings, depending on appetite

Step-by-step instructions

Follow these clear, ordered steps to make the dish exactly as intended. Quantities and ingredient names are taken from the ingredient list above.

1. Preheat and prepare

1. Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish or similar casserole pan and set it aside.

2. Cook the pasta shells

2. Bring a large pot of salted water to a rolling boil. Add the 12 ounces of dry jumbo pasta shells and cook according to the package directions until al dente. You want the shells soft enough to fill but still holding their shape.
3. Carefully drain the shells and spread them on a baking sheet or a clean towel so they don’t stick together while you assemble the filling.

3. Sear the chicken

4. While the pasta cooks, heat 1 tablespoon of olive oil in a large skillet over medium-high heat.
5. Add the 1 pound of cubed boneless, skinless chicken breasts to the hot skillet in a single layer. Allow the chicken to cook undisturbed for 2–3 minutes to develop a light golden color on one side.
6. Stir or flip the chicken pieces and continue cooking until the chicken is cooked through and no longer pink in the center, about 4–6 minutes total depending on the size of the cubes. If needed, reduce the heat slightly to avoid over-browning while ensuring the chicken cooks through.
7. Remove the skillet from heat and let the chicken rest for a couple of minutes. Transfer the cooked chicken to a cutting board or a bowl and, if desired, briefly chop any larger pieces so the chicken mixes evenly into the filling.

4. Make the filling

8. In a large mixing bowl, combine 15 ounces of ricotta cheese with 5 ounces of shredded Parmesan cheese. Reserve a small portion of the Parmesan (about 1 ounce) for sprinkling on top of the assembled dish later; the remaining shredded Parmesan goes into the filling.
9. Add 1 tablespoon of Italian seasoning to the cheese mixture and stir until well combined.
10. Fold the cooked, cubed chicken into the ricotta-Parmesan mixture so the chicken pieces are evenly distributed. Taste the mixture and adjust seasoning with a pinch of salt and pepper if you like, but keep the flavors balanced so they complement the marinara sauce.

5. Assemble the baking dish

11. Spread about half of the 24 ounces of marinara sauce evenly in the bottom of the prepared baking dish. This creates a saucy base so the shells don’t stick and adds flavor to every bite.
12. Using a spoon, fill each cooked jumbo shell with a generous scoop of the chicken-ricotta filling. Place the filled shells seam-side up in the baking dish, arranging them snugly in a single layer. Continue until you have filled and arranged all shells (or until the filling is used up).
13. Pour the remaining marinara sauce over the filled shells, spreading gently so each shell is coated and the sauce fills the gaps between shells.
14. Sprinkle the reserved shredded Parmesan evenly over the top of the sauced shells for a golden, cheesy finish when baked.

6. Bake

15. Cover the baking dish loosely with aluminum foil to keep the moisture in and prevent the tops from drying out.
16. Bake in the preheated 375°F (190°C) oven for 20 minutes covered.
17. After 20 minutes, remove the foil and bake an additional 5–10 minutes, or until the sauce is bubbling and the Parmesan on top has melted and started to turn golden.
18. Remove the dish from the oven and let it rest for 5 minutes before serving—this helps the filling set slightly so the shells hold their shape on the plate.

Serving suggestions

These stuffed shells pair beautifully with a simple green salad, garlic bread, or roasted vegetables. A light drizzle of extra virgin olive oil and a few torn basil leaves add freshness right before serving. Leftovers reheat well in a covered oven-safe dish at 350°F (175°C) until warmed through, or in the microwave in shorter bursts to avoid drying out.

Notes and tips for success

• Don’t overcook the shells. Aim for al dente so they hold the filling and don’t fall apart while assembling or baking.
• Cut the chicken into relatively small, uniform cubes so each shell gets a few pieces and the texture is consistent throughout.
• If your marinara is particularly thick, you can thin it with a tablespoon or two of water or broth so it spreads easily around the shells and creates a saucy base.
• Reserve some Parmesan for topping. A light sprinkling before baking gives a nicely browned crust that contrasts with the creamy inside.
• To save time, you can use rotisserie-style pre-cooked chicken that’s been shredded or chopped—just ensure it’s in the same approximate quantity and mixed thoroughly with the cheeses and seasoning.

Flavor variations

If you want to change the flavor profile while keeping the recipe’s structure, try these simple swaps or additions:

• Add chopped spinach (sautéed and well-drained) to the ricotta mixture for a green, nutrient-packed twist.
• Stir in a small amount of red pepper flakes to the filling or marinara for a touch of heat.
• Use a blend of cheeses—mix mozzarella into the filling or sprinkle shredded mozzarella on top before baking for extra gooeyness.
• For a brighter version, fold in a tablespoon of lemon zest into the chicken-ricotta mixture; it livens the dish without overpowering the classic flavors.

Make-ahead and storage

• To assemble ahead: Prepare the shells and filling, arrange everything in the baking dish, cover tightly with plastic wrap, and refrigerate for up to 24 hours. When ready to bake, remove the plastic, top with foil, and bake as instructed—add a few extra minutes if baking straight from chilled.
• Leftovers store well in an airtight container in the refrigerator for 3–4 days.
• To freeze: Assemble the dish in a freezer-safe container, cover tightly, and freeze for up to 2 months. Thaw overnight in the refrigerator before baking, then follow the baking instructions, adding extra time as needed until heated through.

Final thoughts

This recipe for Chicken Stuffed Shells is the kind of weeknight dinner that feels effortless but tastes like it took time and care. It’s versatile, forgiving, and perfect for feeding a family or entertaining friends. The creamy ricotta and savory Parmesan pair with tender chicken and rich marinara for a classic, crowd-pleasing plate. Make it your own with fresh herbs, a sprinkle of red pepper flakes, or an extra layer of cheese on top—either way, this will become a go-to recipe for cozy, comforting meals.