Dinner

Slow Cooker Italian Meatball Soup Recipe

ByZoe Lane March 25, 2026March 25, 2026

Introduction

Slow Cooker Meatball Soup is a comforting and wholesome one-pot meal that’s perfect for busy days. Featuring Italian-style meatballs in a creamy tomato broth with pasta, spinach, and parmesan, it’s an easy dish that fills the house with irresistible aromas.

A white bowl filled with a creamy orange soup that has small pasta tubes, bright green spinach leaves, and four browned meatballs spread evenly on top. The soup looks thick and smooth, with small pieces of onions and herbs mixed in. Two woman's hands are holding the bowl from the sides. Next to the bowl, on a white marbled textured surface, there is a piece of crusty bread and some fresh green parsley. A blue and white patterned cloth is partly visible at the top right corner. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

20 ounces frozen Italian style meatballs
1 medium yellow onion, diced
3 teaspoons garlic, minced
6 cups low-sodium chicken broth
28 ounces diced tomatoes (canned)
6 ounces tomato paste (canned)
1 teaspoon black pepper
1 teaspoon Italian seasoning
1 teaspoon paprika
½ teaspoon dried thyme
2 tablespoons cornstarch
1 ½ cups heavy cream
16 ounces dry ditalini pasta
1 cup Parmesan cheese, finely shredded
4 cups fresh baby spinach

Instructions

Step 1: Stir together the frozen meatballs, diced onion, minced garlic, chicken broth, diced tomatoes, tomato paste, black pepper, Italian seasoning, paprika, and dried thyme in the slow cooker.
Step 2: Cover and cook on high for 3-4 hours or on low for 6-8 hours.
Step 3: Whisk the cornstarch and heavy cream together until smooth with no lumps, then pour this mixture into the slow cooker and stir to combine.
Step 4: Add the uncooked ditalini pasta, shredded Parmesan cheese, and fresh baby spinach. Continue cooking for 15-30 minutes until the pasta is tender and the spinach is wilted.
Step 5: Stir well before serving and enjoy your hearty meatball soup.

Tips & Variations

Use a food processor or small chopper to dice the onion quickly and evenly.
If the soup becomes too thick after adding pasta, thin it out with extra broth as needed.
Add chopped celery and carrots for more vegetables and flavor.
Use rice instead of pasta for a gluten-free option; cook rice separately and add at the end.
For homemade meatballs, sear or partially bake them first to keep their texture firm in the slow cooker.

Storage

Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently on the stovetop or in short bursts in the microwave. Avoid freezing this soup, as the pasta can become mushy upon thawing.

How to Serve

A white bowl filled with creamy orange soup containing three brown meatballs spread out in the middle. The soup has small tube pasta in a pale yellow color, mixed with bright green spinach leaves scattered throughout. The bowl is held by two woman's hands against a white marbled surface. To the right of the bowl is a piece of crusty bread with a rough texture resting on a cloth with a blue and white pattern. A bunch of fresh parsley with vibrant green leaves is placed near the top left of the bowl. Photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use other types of meatballs?

Yes, you can substitute with plain frozen meatballs or homemade meatballs. Just ensure they’re pre-cooked before adding to the slow cooker to maintain texture and safety.

When should I add the pasta to avoid mushiness?

It’s best to add uncooked pasta during the last 15-30 minutes of cooking. This prevents the pasta from overcooking and becoming mushy. Keep an eye on it and adjust the time based on your preferred pasta texture.

Zoe Lane