Slow Cooker Meatball Casserole

Why You’ll Love This Recipe

Slow Cooker Meatball Casserole is a comforting, hearty dish that layers juicy meatballs, rich marinara sauce, tender pasta, and melted cheese—all made with minimal effort. Perfect for busy weeknights or weekend gatherings, this family-friendly casserole is satisfying, hands-off, and bursting with Italian-inspired flavor.

ingredients

this Recipe

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

frozen or homemade meatballsuncooked pasta (like penne or rotini)marinara or pasta sauceshredded mozzarella cheeseparmesan cheese (optional)Italian seasoninggarlic powdersaltblack pepperwater or chicken brothfresh basil or parsley (optional, for garnish)

directions

Spray the inside of your slow cooker with nonstick spray.

Add meatballs and pour marinara sauce over them. Sprinkle with Italian seasoning, garlic powder, salt, and pepper. Stir to coat.

Cover and cook on low for 4-5 hours or high for 2-3 hours, until meatballs are heated through.

About 30-40 minutes before serving, stir in the uncooked pasta and 1½ to 2 cups of water or broth (enough to cover the pasta).

Cover and cook on high until the pasta is tender, stirring once or twice to prevent sticking.

Once the pasta is cooked, sprinkle mozzarella and parmesan on top. Cover for 5-10 minutes to melt the cheese.

Serve hot, garnished with fresh basil or parsley if desired.

Servings and timing

This recipe yields 6 servings.Preparation time: 10 minutesSlow cooking time: 4-5 hoursTotal time: 4½ to 5 hours

Variations

Use turkey or plant-based meatballs for a lighter version.

Add chopped spinach or zucchini for extra veggies.

Swap marinara for Alfredo or vodka sauce for a creamy twist.

Top with red pepper flakes for a spicy kick.

Layer with ricotta for a lasagna-inspired flavor.

storage/reheating

Store leftovers in an airtight container in the fridge for up to 4 days.Reheat in the microwave or on the stovetop with a splash of water or sauce to loosen.If using homemade meatballs, the casserole can be frozen for up to 2 months. Thaw in the fridge before reheating.

FAQs

Do I need to cook the pasta first?

No, the pasta cooks right in the slow cooker—just add liquid and stir.

Can I use homemade meatballs?

Yes, just make sure they’re fully cooked before adding to the slow cooker.

What type of pasta works best?

Short pasta like penne, rotini, or rigatoni holds up well in the slow cooker.

Can I make this dish ahead?

Yes, assemble everything except the pasta and refrigerate. Add pasta and liquid when ready to cook.

Can I cook it on high the whole time?

Yes, but reduce the total cook time to about 3 hours.

Is it kid-friendly?

Absolutely—cheesy pasta and meatballs are always a hit.

Can I double the recipe?

Yes, just use a large slow cooker and adjust cooking times slightly.

Conclusion

Slow Cooker Meatball Casserole is a cozy, hands-off meal that brings together all your favorite Italian flavors in one easy dish. With minimal prep and maximum flavor, it’s a great go-to for feeding your family or prepping ahead for a busy week. Let your slow cooker do the work and enjoy a warm, cheesy, and satisfying dinner with every bite.

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