Chicken Alfredo Stuffed Shell Casserole

This Chicken Alfredo Stuffed Shell Casserole is stuffed with chicken and spinach, smothered in Alfredo sauce, and baked until bubbly. So good.

Chicken Alfredo Stuffed Shell Casserole is a baked pasta dish made with jumbo shells stuffed with a chicken, spinach, and ricotta filling, then covered in Alfredo sauce and melted cheese. This recipe serves 6 to 8 people, delivers a creamy, cheesy casserole with tender pasta and a golden bubbly top, and is perfect for weeknight dinners, potlucks, or make-ahead freezer meals.

Here’s everything you need to make it perfectly.

I’ve made this Chicken Alfredo Stuffed Shell Casserole probably a dozen times now, and I still squeeze the spinach dry twice because the first squeeze never gets out enough water. Skip that step and you’ll end up with a watery filling that slides right out of the shells. This one’s become our go-to for Sunday dinners when I want something that feels fancy but only takes about 20 minutes of actual hands-on work

Why You’ll Love This Chicken Alfredo Stuffed Shell Casserole

This Chicken Alfredo Stuffed Shell Casserole is rich, creamy, and loaded with tender shredded chicken in every bite. The shells hold their shape but stay soft, and the mozzarella on top gets golden and bubbly in the oven. It’s an easy make-ahead dinner that reheats beautifully for lunches all week. Kids and adults both go back for seconds, and cleanup is minimal since everything bakes in one dish.

What Ingredients Do You Need for Chicken Alfredo Stuffed Shell Casserole?

Ingredient Group	Ingredient	Amount	Notes
Main	Jumbo pasta shells	12 ounces	Cook al dente
Main	Olive oil	2 tablespoons	For prepping
Main	Cooked chicken	2 cups	Shredded or diced
Filling	Frozen chopped spinach	1 (10 oz) package	Thawed, squeezed dry
Filling	Ricotta cheese	1 (15 oz) container	—
Filling	Parmesan cheese	1/2 cup	Grated
Filling	Egg	1 large	—
Filling	Garlic powder	1/2 teaspoon	—
Filling	Salt and black pepper	To taste	—
Sauce & Topping	Alfredo sauce	2 (15 oz) jars	—
Sauce & Topping	Mozzarella cheese	1 1/2 cups	Shredded

The ricotta and Parmesan combo is what makes this creamy chicken casserole taste like something from a restaurant instead of a weeknight bake. If you’ve got rotisserie chicken on hand, this stuffed shells with chicken recipe comes together even faster since you skip the cooking step entirely. Don’t skip squeezing the spinach — it’s the difference between a filling that holds together and one that turns soupy.

How to Make Chicken Alfredo Stuffed Shell Casserole Step by Step

Prep the Shells and Filling

1. Preheat your oven to 375°F (190°C).
2. Cook the jumbo pasta shells according to package directions until al dente.
3. Drain the shells and rinse with cold water to keep them from sticking, then set aside.
4. In a large bowl, combine the cooked chicken, squeezed-dry spinach, ricotta cheese, 1/4 cup of the Parmesan, egg, garlic powder, salt, and pepper.
5. Mix the filling well until everything is evenly combined.

💡 A cookie scoop makes portioning the filling into each shell way faster and less messy.

Assemble the Casserole

6. Carefully stuff each cooked shell with the chicken and ricotta mixture.
7. Spread about 1/2 cup of Alfredo sauce on the bottom of a 9×13 inch baking dish.

Pro Tip: A layer of sauce under the shells keeps the bottom layer from sticking or drying out.

8. Arrange the stuffed shells in a single layer in the prepared baking dish.
9. Pour the remaining Alfredo sauce over the shells, making sure they’re well coated.
10. Sprinkle the shredded mozzarella and remaining 1/4 cup Parmesan over the top.

Bake and Serve

11. Cover the dish with aluminum foil and bake for 25 minutes.

Pro Tip: Keeping the foil on for the first 25 minutes traps steam so the shells don’t dry out.

12. Remove the foil and bake for an additional 10-15 minutes, until the cheese is melted and bubbly and the casserole is heated through.
13. Let the casserole stand for a few minutes before serving.

💡 Letting it rest for 5-10 minutes helps the sauce set up so it doesn’t run all over the plate.

Expert Tips for Perfect Chicken Alfredo Stuffed Shell Casserole

Pro Tips for Success

The key to shells that don’t rip is boiling them just shy of al dente — they’ll finish softening in the oven, and firmer shells are much easier to stuff without tearing.

For best results, use rotisserie chicken for the shredded chicken. It’s more tender than boiled chicken breast and adds a bit more flavor to the filling.

The most common mistake is skipping the second squeeze on the spinach — instead, wring it out in a clean kitchen towel until barely any water drips out.

This Alfredo pasta bake works best when you let it rest for a few minutes before serving so the sauce thickens instead of pooling on the plate.

If the top isn’t golden enough after 40 minutes, pop it under the broiler for one to two minutes. Just watch it closely so the cheese doesn’t burn.

Delicious Variations

Quick Version: Use rotisserie chicken and pre-shredded mozzarella to cut prep time in half. You can have this in the oven in under 15 minutes of hands-on work.

Alternative Ingredients: Swap the ricotta for cottage cheese blended smooth, or use a jarred vodka sauce instead of Alfredo for a different creamy chicken casserole twist. Our chicken Parmesan stuffed shell bake uses a similar swap if you want to see it in action.

Gluten-Free: Use gluten-free jumbo shells and double-check your Alfredo sauce label, since some brands use wheat-based thickeners.

Troubleshooting Common Problems

Problem: The shells tore while stuffing. Solution: Cook the shells slightly under al dente next time. They’re sturdier and less likely to rip when they still have some bite.

Problem: The casserole came out watery. Solution: This almost always means the spinach wasn’t squeezed dry enough. Wring it out hard before mixing it into the filling.

How to Store and Reheat Chicken Alfredo Stuffed Shell Casserole

Storage Method	Duration	Best Practice
Room Temperature	Up to 2 hours	Cover to keep the top from drying out
Refrigerator	3 to 4 days	Store in an airtight container
Freezer	Up to 3 months	Freeze before or after baking, wrapped tightly

Reheat leftovers in a 350°F oven, covered with foil, until the sauce is bubbling again and the cheese on top turns glossy. The microwave works too, but the shells can get a little chewy around the edges.

If you’ve got extra filling leftover, spread it on toast with a bit of marinara, or stir it into scrambled eggs for a quick breakfast the next morning. For more ideas, check out our full list of family dinner casseroles and bakes.

FAQs About Chicken Alfredo Stuffed Shell Casserole

Honestly, if you make one casserole this month, make it this one. It’s the kind of dinner that gets recipe requests before people even finish their plate. If you’re building out a rotation, our creamy chicken stuffed shells recipe is a great one to pair it with. Save this one to Pinterest so you don’t lose it, and if you try it, come back and tell me how it turned out — I read every comment.

Chicken Alfredo Stuffed Shell Casserole is creamy, cheesy, and packed with tender chicken and spinach in every bite. A cozy weeknight dinner or make-ahead freezer meal that’s ready in under an hour. Save this recipe for later!