Crock Pot Spaghetti and Meatballs

This crock pot spaghetti and meatballs recipe is your go-to no-fuss slow cooker dinner made with frozen meatballs, jarred marinara sauce, spaghetti, and just a handful of simple seasonings. It mostly cooks itself in the slow cooker, with the pasta finishing tender and perfectly soaked in a rich sauce — all ready in about three and a half hours. Scroll down to the bottom of this post for a printable recipe card with exact measurements and easy-to-follow steps to get dinner on the table.

If you’re looking for a comforting, hassle-free weeknight dinner, this crock pot spaghetti and meatballs recipe is it. Using frozen meatballs and store-bought marinara keeps things simple and quick, turning your pantry staples into a warm, hearty meal that cooks mostly hands-off in the slow cooker. The spaghetti finishes soft and flavorful, wrapped in a thick, savory sauce loaded with classic Italian-American taste.

In this post, I’ll walk you through a quick overview, and right at the bottom there’s a printable recipe card with all the exact measurements and step-by-step instructions. Plus, I’ll share some practical tips to help you get it just right every time — including the perfect 3½-hour timeline, when to add the spaghetti broken into thirds, and why stirring during the last hour is a game changer for even noodle cooking. This recipe serves around six people and is very family-friendly — plus, it’s easy to tweak or prepare ahead to fit your busy schedule.

Why You’ll Love It

• Super hands-off: just dump everything in, stir a couple times, and let the slow cooker do all the magic—much like Crockpot Million Dollar Ravioli.
• Kid- and family-approved: simple, familiar flavors with a hearty amount that feeds about six hungry eaters.
• Easiest ingredients ever: frozen meatballs and jarred marinara make this a quick, pantry-to-plate meal you can toss together anytime—similar to One-Pot Veggie Pasta.
• Perfectly tender pasta every time: breaking up the spaghetti noodles before adding and stirring them during the last hour keeps them from clumping and cooking unevenly in the sauce.

Ingredients and Quantities

• 32 oz frozen meatballs
• 48 oz marinara sauce (that’s 2 jars, 24 oz each)
• 1 1/4 cups water
• 1 tablespoon Italian seasoning
• 1 tablespoon garlic puree (or 1-2 fresh garlic cloves, minced)
• 1 teaspoon salt
• 1 teaspoon black pepper
• 12 oz spaghetti noodles, uncooked (break into thirds before you add them)
• Optional garnish: freshly grated Parmesan cheese and chopped parsley

How to Make It

1. Place the frozen meatballs into the crock pot.
2. Pour the marinara sauce over the meatballs.
3. Add the water, Italian seasoning, garlic puree (or minced garlic), salt, and black pepper to the pot.
4. Gently stir to combine.
5. Cover and cook on LOW for 2 hours.
6. Break the uncooked spaghetti into thirds and add them to the pot, stirring so most noodles are coated and settle around the meatballs.

7. Cover and cook on LOW for another 1 to 1½ hours, stirring every 20–30 minutes to prevent the noodles from sticking and to ensure even cooking.

8. When the spaghetti is tender, stir the pot, taste, and adjust seasoning as needed.

Pro Tips for Success

• Breaking the spaghetti into thirds before adding helps the noodles fit comfortably and cook evenly in the slow cooker.
• Stirring every 20 to 30 minutes during the last hour is key to keeping the noodles separated and well coated in sauce.
• If the sauce thickens too much, add a tablespoon or two of water until it’s just right—an adjust-as-you-go approach we also use in Creamy Chicken Pot Pie Orzo. If it feels too thin, you can take the lid off and cook on LOW for a bit to thicken it up.
• Frozen, pre-cooked meatballs work best for this recipe — they’re safe and give you reliable timing. Fresh or raw meatballs will need more attention and a slightly longer cook time to make sure they’re cooked through safely.
• Don’t fill the crock pot all the way to the top. Leave room for the pasta to expand and enough space to stir without spilling. This headspace rule also applies when making Slow Cooker Cowboy Potato Casserole.

Ways to Customize

• Swap out the meatballs for your favorite type — turkey, chicken, beef, or even plant-based options work great with this recipe.
• Switch up the sauce with something different like marinara with red pepper flakes if you like a little heat, or try vodka or arrabbiata sauce for a new flavor twist, or even a Cajun cream cheese Alfredo.
• Want a different pasta shape? Penne or ziti can replace spaghetti, but keep in mind they might need a little adjusting in cook time. Add them once the sauce is hot and check often.
• For extra color and nutrition, stir fresh spinach, sliced mushrooms, or bell peppers into the crock pot during the last 30 to 45 minutes so they stay tender but still have some bite.
• Make it cheesy and rich by stirring in a handful of shredded mozzarella or a splash of cream right before serving.

Storing and Reheating

• Refrigerate leftovers in an airtight container for 3 to 4 days—you’ll have a quick lunch or dinner ready to go. For a fresh side, add Fall Fruit Salad.
• If you want to freeze, it’s best to keep the sauce and meatballs separate from the pasta because spaghetti can get a bit mushy once thawed. Freeze up to 2 to 3 months.
• Reheat gently on the stove over low to medium heat with a splash of water or extra sauce to loosen things up. Or microwave in short bursts, stirring in between.
• You can also assemble all the crock pot ingredients (except the pasta) the day before and keep it in the fridge. Then, when you’re ready to cook, add the dry broken spaghetti noodles and start the slow cooker.

Common Questions

• Q: Can I use fresh (not frozen) meatballs?

  A: Absolutely! Just adjust the cooking time so the fresh meatballs cook all the way through. For raw meatballs, make sure they reach a safe temperature (165°F/74°C if poultry, 160°F/71°C for beef or pork blends).

• Q: Can I speed things up by cooking on HIGH?

  A: You can, but you’ll need to reduce the cooking times. On HIGH, cook the meatballs until hot (about 1 to 1½ hours), then add the noodles and cook about 30 to 60 minutes more, stirring often. Cooking on LOW gives you better, more even results though.

• Q: What if my noodles clumped or cooked unevenly?

  A: Breaking the spaghetti into smaller pieces before adding it to the crock pot and stirring every 20 to 30 minutes during the last hour prevents clumps and keeps the noodles cooking evenly. This is the same approach we use when finishing the noodles in Crack Chicken Noodle Soup.

• Q: Can I double this recipe?

  A: Yes, just use a bigger slow cooker and don’t fill it beyond about two-thirds or three-quarters full. That way, there’s room to stir and everything cooks evenly.

Print