Best Slow Cooker Spaghetti and Meatballs – Ultimate Comfort Food

Bowl of slow cooker spaghetti and meatballs topped with Parmesan cheese

This post may contain affiliate links.

If you want a simple, hands-off dinner that tastes great, slow cooker spaghetti and meatballs is a perfect choice. It lets you combine sauce, meatballs, pasta, and seasonings all in one pot, saving you time and dishes. 

The best part is that you can cook everything together in the slow cooker, including the spaghetti, for an easy and flavorful meal.

You don’t need to worry about watching the stove or boiling pasta separately. Just add your ingredients, set the slow cooker, and let it do the work while you focus on other things.

Whether you use homemade or store-bought meatballs, this recipe makes dinner both convenient and tasty for busy weeknights or casual gatherings.

If you enjoy easy family dinners like this, explore my Crockpot Beef Recipes collection for more hearty slow cooker meals made with simple ingredients.

You can also browse my full collection of Crock Pot Recipes to find slow cooker chicken dinners, pork recipes, soups, and easy comfort meals.

Why You’ll Love These Slow Cooker Spaghetti and Meatballs

You’ll need a few simple ingredients and a steady hand for layering. Cooking slowly helps the flavors blend well and the meatballs turn tender. With some easy steps and helpful tips, you’ll have a tasty meal ready to serve.

Ingredients for Spaghetti and Meatballs

  • 1 pound ground beef (or a mix of beef and pork)
  • ½ cup breadcrumbs
  • ¼ cup grated Parmesan cheese
  • 1 egg
  • 2 cloves garlic, minced
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • 1 teaspoon Italian seasoning
  • ¼ cup chopped fresh parsley (optional)
  • 1 (24-ounce) jar marinara sauce
  • 1 (14.5-ounce) can crushed or diced tomatoes
  • 12 ounces spaghetti (uncooked)
  • 1 teaspoon sugar (optional, to balance acidity)
  • 3 cups water or low-sodium beef broth
  • Extra Parmesan and fresh basil for serving

To make this recipe, you’ll want a 6-quart slow cooker and I also recommend using slow cooker liners for easy cleanup.

Now here’s how it all comes together…

How to Make Slow Cooker Spaghetti and Meatballs

Combine the ground meat, breadcrumbs, Parmesan, egg, garlic, salt, pepper, Italian seasoning, and parsley in a bowl. Mix gently until just combined, then roll into small meatballs (about 1 to 1½ inches).

Place the meatballs in the bottom of the slow cooker. Pour the marinara sauce and crushed tomatoes over the top, stirring gently to coat the meatballs.

Cover and cook on Low for 5–6 hours or High for 2½–3 hours, until the meatballs are cooked through.

About 30 minutes before serving, break the spaghetti noodles in half and stir them into the sauce, adding the water or broth.

Make sure the noodles are submerged as much as possible. Cover again and cook on High for another 25–30 minutes, stirring once or twice to prevent sticking, until the pasta is tender.

Serve hot, topped with extra Parmesan and fresh basil if desired.

If you enjoy cozy slow cooker comfort meals like this, you might also love my Slow Cooker Chili, Slow Cooker Beef Stroganoff, or Slow Cooker Italian Meatball Soup.

This small detail makes a big difference…

Slow Cooker Tips

Use low heat to keep the sauce from drying out and to tenderize the meatballs perfectly. Avoid lifting the lid too often because that lets heat escape and slows cooking.

If you use frozen meatballs, they’ll cook nicely without thawing first. For fresh meatballs, brown them slightly in a pan before adding to the cooker to lock in flavor.

Adjust water or broth amounts if your slow cooker runs hot or if the sauce looks thick before serving. Add more liquid in small amounts as needed.

Serving and Storage Suggestions

Let your spaghetti and meatballs cool to room temperature before storing. Use airtight containers to keep leftovers fresh for up to 3-4 days in the fridge.

When reheating, microwave in 1-2 minute intervals, stirring in between for even heat.

You can also warm leftovers on the stove over low heat, adding a splash of water or broth to keep sauce from drying out. For longer storage, freeze in meal-sized portions and thaw in the fridge before reheating.

And this is where the meal really comes together…

Best Dishes to Pair With

Garlic bread or toasted baguette slices are perfect for soaking up extra sauce. A simple green salad with a light vinaigrette balances the richness of the meal.

You can also serve steamed or roasted vegetables like broccoli, green beans, or carrots for more fiber.

If you want some extra flavor, sprinkle grated Parmesan or fresh basil on top of your spaghetti and meatballs before serving.

Creative Leftover Ideas

Leftover spaghetti and meatballs can easily turn into another meal. Spoon the pasta and sauce into a baking dish, top with mozzarella cheese, and bake for a quick spaghetti casserole.

You can also use the meatballs in sandwiches, wraps, or pasta bakes for an easy second dinner.

Follow my Slow Cooker board on Pinterest.