Slow Cooker Tomato Soup
2 Comments Feb 23, 2022
Updated May 30, 2025
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Making rich and creamy tomato soup in the slow cooker has never been easier. It’s a cozy meal that works great for dinner—and makes even better leftovers the next day.
If you want something better than canned tomato soup, then try my from scratch version. Full of healthy ingredients and wonderful any time of the year.
Key Ingredients For Slow Cooker Tomato Soup
- Italian-style diced tomatoes & fresh tomato
- Onion, garlic & garlic powder
- Chicken broth & tomato paste
- Butter & heavy cream (don’t substitute)
- Parmesan cheese & fresh basil
- Optional: crumbled pork sausage for extra heartiness
Cook’s Notes
Add fresh basil at the beginning for a flavorful tomato basil version. Dried basil works too if that’s what you have on hand.
For more protein, throw in a couple of small chicken breasts before cooking. Shred them and stir back in after blending.
Add in more veggies like celery, carrots, or even a little thyme and oregano. Once it’s blended, no one will know.
If you don’t have an immersion blender, carefully blend in batches using a stand blender—just make sure the lid is secure.
Want it even creamier? Stir in extra heavy cream or a bit of cream cheese after blending.
Serving Tips
This soup is great topped with saltine crackers or croutons.
Grilled cheese is the perfect side to have with this soup. Garlic bread is also a great choice.
Leftovers reheat well; store them in single-serve containers for easy lunches.
Featured Comment
“Great easy meal with our grilled cheese sandwiches as we wait out Hurricane Idalia.”
– Amy
Slow Cooker Tomato Soup Recipe
Ingredients
- 4 tbsp flour
- 6 tbsp water
- 28 oz. can italian style diced tomatoes
- 1 large tomato, diced
- 1 small yellow onion, diced
- 2 cloves garlic, minced
- 5 cups chicken broth
- 2 Tbsp. Tomato paste
- 4 Tbsp. salted butter
- 1 cup heavy whipping cream , (do not substitute, lower fat dairy can seperate).
- 1 Tbsp. garlic powder
- 1/4 cup shredded parmesan cheese
- 3 Tbsp. fresh basil, chopped
- 1 lb. pork sausage, (optional, cook and crumble and add at end of cooking time if desired)
- additional heavy cream for serving , for swirling on top
Instructions
- In a small bowl, whisk the flour and water.
- Add canned tomatoes (do not drain), diced tomato, diced onions, and minced garlic to the slow cooker. Pour in flour mixture, chicken broth, tomato paste, butter, 1 cup heavy whipping cream, and garlic powder. Stir to combine. Cover and set the slow cooker to high and cook for 3 hours, or low for 5 hours.
- Use an immersion blender to blend the soup or place the soup in a blender in batches in a stand blender (be sure lid is on well).
- Top with shredded parmesan and fresh basil. Swirl ¼ cup of heavy whipping cream into the soup. Enjoy!
- If you want sausage, brown and crumble it. Stir into the finished soup.
Sarah’s Notes
Nutrition
Nutrition info is auto-generated. This information is an estimate; if you are on a special diet, please use your own calculations.
Next soup recipes to try:
- Creamy slow cooker split pea soup and creamy corned beef and cabbage soup are hearty, stick-to-your-ribs favorites that simmer into rich, savory perfection.
- Slow cooker French onion soup and zesty bloody mary soup both bring bold, deep flavors — one with caramelized onions and melty cheese, the other with a spicy tomato kick.
- Crockpot chicken and dumplings, beefy busy day soup, and loaded crockpot baked potato soup are creamy, comforting, and perfect for easy weeknight meals.
- Slow cooker broccoli cheese soup delivers that same cozy feel, with a smooth, cheesy finish that always hits the spot.
My family enjoyed this very much! Thanks!
Great easy meal with our grilled cheese sandwiches as we wait out Hurricane Idalia.