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Tomato Parmesan Slow Cooker Soup is a delicious vegetarian comfort food meal that the whole family will love.
On a particularly busy week, the ease of making Tomato Parmesan Slow Cooker Soup in the {affiliate} crock pot or slow cooker is just so awesome!
Serve this bread with some homemade Dakota Bread or with a Toaster Oven Grilled Cheese for a classic comfort food meal!
And when the soup comes out as tasty as this one, well, you have a winner – easy and yummy! everything you could want! Especially when it’s so cold out and you just need something warm in your tummy.
We appreciate your support
Please let me know if you have any questions about this recipe. I read all the comments myself and I try to help as soon as I can. I have readers from all levels of comfort and experience in the kitchen on my site, and I’ve tried to answer some of your questions already in the post. But if I’ve missed anything, please feel free to leave a comment and ask.
Fresh bread to go along with this soup
When I make something in the crock pot, I like to make bread in the {affiliate} bread machine at the same time. Then, when it’s time for dinner, everything is all fresh and hot!
These Buttermilk Dinner Rolls can be made as a whole loaf of bread, and would it’d be awesome to make the leftover bread into French Toast the next day.
It’s also delicious with some Cheese Crisps. Check out my easy to make How to Make Cheese Crisps recipe!
Milk of your choice
Use the milk of your choice: half and half will make a thicker richer soup that’s higher in calories; skim milk will make a thinner soup that’s lower in calories. I like the compromise of whole milk in this soup. You could even use a non-dairy milk like canned coconut milk (that would give a great thick soup), or almond milk.
Want more yummy soups? Follow me over on Pinterest for all kinds of soup inspiration!
Want to read some of the reviews, or pin this recipe? Click over to the popular pin for this delicious and easy to make tomato soup.
Looking for more delicious crock pot soups
I love the slow cooker, and I think soups made in it are terrific! Here are some of my favorites: Slow Cooker Creamy Tortilla Soup, Crock pot Meatball and Potato Soup, and Crock Pot or slow cooker Broccoli Cheese Soup.
How does this soup look so smooth?
There are chunks of carrots, onions, and little bits of tomato in this soup. It is not a pureed soup. (though, using crushed tomatoes in the soup as the base makes it look very smooth.)
Because the chunks are heavy, they have sunk down in the bowl. If you look closely there are some carrot bits sticking up.
Now, if you want a pureed smooth soup, you can pop this in the blender, or use an immersion blender on it.
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Kitchen tools you may need for this recipe
4-quart slow cooker
Sauce pan
Whisk
Wooden Spoon
Cutting Board
Chef’s Knife
Recipe
Tomato Parmesan Slow Cooker Soup
Ingredients
- 28 ounce can crushed tomatoes undrained
- 4 carrots sliced
- 1 large yellow onion chopped
- 1 teaspoon dried oregano
- 1 tablespoon dried basil
- 4 cups vegetable broth
- 1 bay leaf
- 1 teaspoon salt
- ½ teaspoon freshly ground black pepper
- ¼ cup olive oil
- ¼ cup butter
- ½ cup flour
- ½ cup freshly shredded Parmesan cheese
- 2 cups whole milk
Instructions
- Add first nine ingredients, tomatoes through black pepper, to the bowl of a 4-quart slow cooker. Cover and cook on low for 5-7 hours, or until vegetables are softened.
- About 30 minutes before serving the soup, prepare the roux. Heat oil and butter over low heat in a sauce pan and add flour. Stir constantly with a whisk for 5-7 minutes, until roux is a smooth light brown paste. Slowly stir 1 cup of hot soup into the roux, until fully mixed in. Add another 3 cups soup to the mixture, and continue to stir until smooth. Add thickened soup back into the slow cooker, and mix in the Parmesan and milk.
- Cover and cook on low for another 30 minutes. Taste for seasonings, and enjoy.
Notes
Nutrition
Nutritional information is based on third-party calculations, and should be considered estimates. Actual nutritional content will vary based on brands used, measuring methods, portion sizes, and more.
LanaLou
This soup is pretty! And it’s delicious.
Winter
This is absolutely DEVINE. I just purchased my first slow cooker and this was the first thing I made 🙂
Dipti
Did You puree with blender after it’s done??, Pictures looks so different from soup i made.
Debi
No, I didn’t blend it. There were chunks of veggies that just sank to the bottom of the bowl and didn’t really show up in the photos. The can of crushed tomatoes I get is pretty saucy, like really tiny flecks of tomatoes. And, Dan makes a nice browned roux. I think blending it would be awesome, but I haven’t ever had to do that. Oh, I also cook it to the longer end, so the veggies are pretty well cooked. Hope that helps. 🙂
kat
I’m making this today for the second time!
Just wanted to note that the roux didn’t work for me in the ratio you have listed.
While the 1/2 cup fat to 1/2 cup flour is equal by volume, it wasn’t by weight. So, I needed to add 1/4 cup more flour (for a total of 3/4 cups) in order for it to come out right.
My husband doesn’t like carrots and I figured if it was smooth, he wouldn’t even realize they were there so I hit it with an immersion blender before adding in the roux and he loved it.
Thanks for this great recipe!
Vanessa
Can I freeze this?
Debi
Vanessa, I haven’t tried freezing this soup, but I suspect it would freeze just fine. I freeze milk based soups often, and have never had a problem.
Marie
Just put all the ingredients into my slow cooker and am hoping for a great dinner!
I didn’t have carrots at home so I went with a sweet potato instead and will puree the soup before adding the roux.
Looks delicious!
cinnabari
So… because it’s June in Irvine, it’s still soup weather. What happens if I don’t add the soup to the roux in batches, but instead just, oh, dump the roux into the slow cooker and mix it there? Will I be setting myself up for lumpy badness?
(the other Kat, whose husband does like carrots)
Debi
Hey Kat! Sorry it took me so long to respond, we were out of town. Yeah, those instructions are so you don’t get a gloup in your soup. To be honest, if I made it I’d probably do that to it and that’s why my stuff is always lumpy, and why Dan has to do the roux. I’m far too impatient for that kind of thing.
Lyndsay
I have this soup cooking right now and I’m so excited for dinner! I just did the roux and added the milk and parm but the carrots are still whole. Did I miss a step where the carrots get blended? I can always just use an immersion blender. Soup smells delish! I took the lid off and in 5 seconds my husband yelled “Mmmmm SOUP!!” Haha
Debi
Lyndsay, no, you didn’t miss a step. There are chunks of carrots in my soup, it’s just that they all sink to the bottom and so you can’t see them in my pictures. We liked it with the chunks of veggies, but if you prefer a smooth soup, yeah, hit it with the immersion blender (mine dined not too long ago… moment of quiet for it). Awesome! Enjoy your dinner!
Cate
Simple and healthy! So good!
LH
I made this soup today and it looks nothing like your picture. I’m wondering how it is you got it to look like that?
Debi
LH, without knowing exactly how yours was different, my only guess is the canned tomatoes. I use crushed tomatoes because they have no chunks of tomatoes (my husband doesn’t care for chunks of tomatoes, so I’ve learned that crushed tomatoes work well for him). They are almost like a tomato puree. I recently made some salsa with them, so you can see the consistency of them here: https://lifecurrentsblog.com/easy-restaurant-style-salsa/ Otherwise, I just followed the directions here, and I’ve made this many times, and it’s always great. Also, the chunks of veggies have sunk to the bottom of the bowls in the photo, so you can’t see them.
ida
I wonder what adding some cauliflower to this recipe would do?
Debi
Interesting, I think it would work. It’d be kinda like a healthy tomato and rice soup. Let me know if you try it; it sounds like fun!
justine
This is one gorgeous soup! I love the color! I, too, like to have my slow cooker and bread machine going at the same time. Makes the house smells amazing!
Amy Crawley
This looks really good……can’t wait to try it! Quick question…..are you able to freeze it? I like doing big batches and freezing into portions for my lunch box! Thanks!
Debi
Amy, Thanks! I haven’t tried freezing it, but I think it would work just fine. I freeze most of the soups I make because there are only two of us eating here. I say go for it. I can’t think of any reason it would go badly freezing it.