Make tender slow cooker stuffed shells filled with creamy ricotta and mozzarella, baked in rich marinara sauce. An easy cheesy Italian dinner the whole family will love.
Slow Cooker Cheesy Stuffed Shells
There are some meals that just feel like comfort food the second you see them, and these slow cooker cheesy stuffed shells are definitely one of them. I usually make this when I’m craving something warm, cheesy, and satisfying but don’t want to spend a lot of time cooking.
The pasta shells are filled with a creamy ricotta and Parmesan mixture, nestled into a rich marinara sauce, and topped with plenty of mozzarella. Honestly, watching that cheese melt into the tomato sauce is probably my favorite part.
The slow cooker does most of the work, making this a really convenient dinner for busy days or relaxed family nights.
Ingredients
- 20–24 jumbo pasta shells
- 15 oz ricotta cheese
- 1½ cups shredded mozzarella cheese, divided
- ½ cup grated Parmesan cheese
- 1 large egg
- 2 cloves garlic, minced
- 1 tsp Italian seasoning
- ½ tsp dried oregano
- ½ tsp black pepper
- ½ tsp salt
- 24 oz marinara sauce
- ¼ cup water
- 2 tbsp fresh parsley, chopped
Step-by-Step Method
1. Cook the pasta shells
Bring a large pot of salted water to a boil. Cook the jumbo shells for about 2 minutes less than the package directions.
You don’t want them completely soft because they’ll continue cooking in the slow cooker.
Drain carefully and let them cool enough to handle.
2. Prepare the cheese filling
In a bowl, combine:
- Ricotta cheese
- ½ cup mozzarella
- Parmesan cheese
- Egg
- Minced garlic
- Italian seasoning
- Oregano
- Salt
- Black pepper
Mix until everything is well combined.
I usually taste a tiny bit of the filling for seasoning before stuffing the shells. A little extra Italian seasoning or Parmesan can make a big difference.
3. Prepare the slow cooker
Spread about 1 cup of marinara sauce over the bottom of the slow cooker.
Add a splash of water to the remaining sauce and stir. This helps create enough moisture for the pasta to cook properly.
4. Stuff the shells
Carefully spoon the cheese mixture into each cooked shell.
Arrange the stuffed shells in the slow cooker with the filled side facing upward.
5. Add the sauce
Pour the remaining marinara sauce over the stuffed shells, making sure the pasta is well covered.
Sprinkle the remaining mozzarella cheese evenly over the top.
6. Slow cook
Cover and cook on LOW for 3–4 hours, until the shells are tender, the filling is hot, and the cheese is melted and bubbly.
Try not to lift the lid too often while they’re cooking.
7. Garnish and serve
Once finished, sprinkle fresh parsley over the top.
Let the shells rest for about 5 minutes before serving. Then scoop them out carefully with a large spoon.
Cooking Tips
- Don’t overcook the shells: Slightly undercooking them before stuffing helps prevent them from becoming mushy.
- Cover the pasta with sauce: This keeps the shells moist while they cook.
- Use full-fat ricotta: It gives the filling a creamier texture.
- Don’t skip the Parmesan: It adds a salty, savory flavor to the cheese filling.
- Avoid opening the lid: Slow cookers lose a lot of heat when the lid is removed.
- Want extra cheese? Add another handful of mozzarella during the last 20–30 minutes of cooking.
Serving Suggestions
I usually serve these stuffed shells with a simple side salad and some warm garlic bread.
They also pair nicely with:
- Steamed broccoli
- Roasted vegetables
- Caesar salad
- Garlic knots
- Crusty Italian bread
- Sautéed spinach
For a complete Italian-inspired dinner, serve the shells with a fresh salad and garlic bread for dipping into that extra marinara sauce.
Approximate Nutrition
Per serving, assuming 6 servings:
- Calories: 475 kcal
- Protein: 24 g
- Fat: 21 g
- Carbohydrates: 48 g
- Fiber: 5 g
- Sugar: 8 g
- Sodium: 850 mg
Nutrition information is an estimate and will vary depending on the brands and exact ingredients used.
Frequently Asked Questions
1. Can I use frozen stuffed shells?
Yes. You can use frozen stuffed shells, although the cooking time will be longer. Cook until the centers are completely hot and the sauce is bubbling.
2. Can I prepare the stuffed shells ahead of time?
Absolutely. You can stuff the shells and assemble everything in advance, then refrigerate until you’re ready to cook. This makes the recipe especially convenient for busy evenings.
3. Can I add meat to the filling?
Yes. Cooked ground beef, Italian sausage, or shredded chicken can be mixed into the cheese filling for a heartier version.
4. Can I use cottage cheese instead of ricotta?
Yes. Cottage cheese works well as a substitute. For a smoother filling, I usually recommend blending it briefly before mixing it with the other ingredients.
5. How do I store leftover stuffed shells?
Store leftovers in an airtight container in the refrigerator for 3–4 days. Reheat individual portions in the microwave or warm them gently in the oven with a little extra marinara sauce.
Conclusion
These slow cooker cheesy stuffed shells are one of those recipes that make dinner feel special without requiring hours of hands-on work. Creamy cheese filling, tender pasta, rich marinara sauce, and plenty of melted mozzarella come together into one seriously comforting meal.
Honestly, I love recipes like this because you can get everything ready, let the slow cooker do its thing, and come back to a warm, cheesy dinner that everyone can dig into