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While trying to spend more time working on the blog during this total nightmare of a COVID19 outbreak, I have been trying to update old recipes, such as this Slow Cooker Tomato Basil Soup Recipe with information to help my readers…right now, we are in week four of lock down in Miami. We are allowed to go grocery shopping, or to get tested, but that is pretty much it. I haven’t left my home since Saint Patrick’s Day, except to buy cigarettes at the drive through convenience store.
Slow Cooker Tomato Basil Soup Recipe
All of my groceries are delivered through Amazon Prime Fresh, about once a week. I know that many are rummaging for things to make for dinner, and we’re reaching into the back of our cabinets, or…or we are going to get food at food drives. That is happening A LOT in Miami.
My friend received an entire crate of tomatoes yesterday, and it reminded me of This Slow Cooker Tomato Basil Soup Recipe – it is PERFECT for those of us who are quarantined and trying to figure out how not to waste all of our fresh veggies!
This Slow Cooker Tomato Basil Soup Recipe uses fresh tomatoes – not canned! Now, of course you can use canned tomatoes, but let’s all be real, okay? Canned never tastes as great as fresh vegetables, and this Slow Cooker soup recipe is so easy to make you aren’t even going to care about any “extra steps.”
You have them too, huh? All these awesome tomatoes fresh from the garden. But, no clue what else other than salad and burgers to use them for, right? How about some Slow Cooker Tomato Basil Soup? Throw it in the slow cooker and, super easy-peasy too! This is a great tomato basil soup recipe not just because it’s easy my foodie lovers.
Looking for other great Slow Cooker Soup Recipes? Check these out!
In the winter, when those tomatoes aren’t popping out of the garden, you can switch it to cans and it still tastes great! And, we all love anything the slow cooker turns into a mouth full of yum, right? Right! So, let’s get to it…
If you need a new slow cooker, check out these awesome ones I found on Amazon!
How to Make a Slow Cooker Tomato Basil Soup Recipe
This Slow Cooker Tomato Basil Soup is pretty much the simplest recipe you will ever make…and hello! It’s all contained in a simple slow cooker, so less work, less mess, less dishes – it is just about PERFECT. Of course, I say this as I am sitting here in the midst of a chilly cold front, but my point stands.
Slow Cooker Tomato Basil Soup Recipe
Ingredients
- 6 cups tomatoes pureed, or substitute 3 cans diced tomatoes
- 1 cup onion, diced
- 4 cups chicken broth
- 1/4 cup basil, finely chopped
- 1 tsp oregano
- 2 cups half and half
- 1/2 cup flour
- 1/2 cup butter
- 1 cup Parmesan cheese, freshly grated
- salt and pepper to taste
Directions
If using fresh tomatoes, puree up 6 full cups and don’t drain any liquid. (if using cans, don’t drain liquid) Pour into slow cooker.
Add onions, oregano, basil, half and half and finally the chicken broth. On low cook covered for 5 hours. Stir occasionally.
About 1/2 hour before you’re ready to serve, make up a quick roux. Use small saucepan over low heat to melt butter, add flour and stir for about 3-5 minutes. Don’t let this burn! Add in 1 cup of cooked soup and stir until super smooth.
Lumpy tomato basil soup is yucky. Pour this back into your slow cooker and stir to incorporate well. Continue to cook on low for about 30 minutes until soup is thickened.
Add Parmesan cheese, let sit for 5 minutes until melted. Salt and pepper to taste.
To print this Slow Cooker Tomato Basil Soup Recipe , simply click the recipe card below.
Slow Cooker Tomato Basil Soup Recipe

Slow Cooker Tomato Basil Soup Recipe
Ingredients
- 6 Cups Tomatoes pureed OR sub in 3 cans diced
- 1 Cup Onion diced
- 4 Cups Chicken Broth
- 1/4 Cup Basil fine chopped
- 1 TSP Oregano
- 2 Cups Half and Half
- 1/2 Cup Flour
- 1/2 Cup Butter
- 1 Cup Parmesan Cheese fresh grated
- Salt & Pepper to taste
Instructions
-
If using fresh tomatoes, puree up 6 full cups and don't drain any liquid. (if using cans, don't drain liquid) Pour into slow cooker.
-
Add onions, oregano, basil, half and half and finally the chicken broth. On low cook covered for 5 hours. Stir occasionally.
-
About 1/2 hour before you're ready to serve, make up a quick roux. Use small saucepan over low heat to melt butter, add flour and stir for about 3-5 minutes. Don't let this burn! Add in 1 cup of cooked soup and stir until super smooth.
-
Lumpy tomato basil soup is yucky. Pour this back into your slow cooker and stir to incorporate well.
-
Continue to cook on low for about 30 minutes until soup is thickened.
-
Add Parmesan cheese, let sit for 5 minutes until melted. Salt and pepper to taste.
Grill up some cheese sammies and serve hot!
See, comfort food! We make this using our fresh tomatoes in the summer and use cans in the winter. It’s awesome after being outside building snowmen with the kiddos on cold days too!
What kind of sandwich should you make to go alongside a slow cooker tomato soup? DUH! Always a grilled cheese, of course! I love using sharp cheddar and mozzarella for extra cheesy goodness. Of course, any old kind of cheese will do, but cheddar is the BEST! I can even get behind a Kraft cheese slice if that is really all you have…yes, I am picky like that! I prefer REAL cheese, not cheese food. But I have clearly eaten a Kraft Single or two in my day – no judgement here! I just want you to have the very best grilled cheese sandwich you could possibly have! Shoot, I would even approve of grilled BRIE sandwiches! YUM!
My husband loves tomato soup, I should make this for him one night, and I can make broccoli and cheese soup for me!
That looks so good! Tomato Basil is one of my favorites. 🙂
The only recipes I’d cook had gluten in it so I haven’t used my slow cooker for a while. I’m sure the basil and oregano compliment the tomato nicely!
I love tomato basil soup. I’ll have to try this recipe soon.
I love tomato basil soup! Making in in my crock pot would be even better!
Everything is better in a crock pot! LOL! 🙂
My husband would love this! My favorite is my old standby… pot roast in the crock pot!
Tomato soup & grilled cheese sandwiches are one of my favorite combos! I want it to cool down a little so I can eat soup. My slow cooker is missing me!
I am a BIG fan of tomato soup and grilled cheese. I even craved it during my last pregnancy. Great to know I can whip some up in my slow cooker for the entire family to enjoy.
This recipe need to be more specific on the ‘tomato puree”. I just put tomatoes in the blender… Pretty sure my soup is going to suck.
Toni, this recipe called for fresh tomatoes – you were right to put them in the blender, and it should definitely NOT suck! 🙂 Let me know how it turns out!
Amazing that tomato basil soup can be done in a slow cooker. Those things are wonderful and I am going to get this recipe a try for sure.
Making this next week. For sure. 🙂
I’m making this for the first time. I used three cans diced tomatoes. And I still ran them through the blender a little. It takes the tomatoes a long time to fully incorporate with the 1/2 and 1/2.
Last week I got a box of tomatoes at the farmers’ market but have used most of those up. Hopefully I’ll be able to get another box this week just so I can try this recipe!
this recipe looks delish! I used to eat grilled cheese sandwiches with tomato soup in college. I just love it. Thanks for the yummy recipe.
I make tomato soup a lot, but never thought of making it in slow cooker. awesome recipe. thanks!
Can anyone give me an approximate amount of fresh tomatoes it takes to make 6 cups of puree?
We love tomato soup over here. I’ve never tried it in the crock pot. inning to my crock pot board.
Thank you for sharing!
Hi! I just threw everything in the crockpot, but it’s a pink color! Will it turn red over the course of the time it takes to cook? Or did I mess something up?
Thanks!!
Did you make any substitutions? Ronni (she made the recipe) says that it shouldn’t be PINK but the colors of red can vary depending on the ripeness of the tomatoes. I am getting off the computer in a minute but you can email me therebelchick @gmail.com
Just made this soup with some of my garden’s tomatoes (boy did we get a ton in this year) and we love it! I threw it back though the ninja to smooth it out towards the end of the crock pot time- my family is big on non-lumpy. Definitely a keeper for fresh tomatoes and a busy day. Thank you so much!
YAY! I am so glad that you liked it! 🙂
What size cans should I use? 14.5?
Yes, that will work!
I made this today but added my own flair….your recipe was the perfect base! Added sugar and plenty of salt to make it a bit sweeter. Husband ate two huge servings! Thank you for sharing!
Hi there…like the sugar idea, how much did you add?
This is fantastic! I used fresh tomatoes and followed the recipe exactly…except for adding some dried parsley in addition the the oregano. In the last week, I have made 4 batches, sharing it with neighbors. Thanks for a great recipe!
Oh yay! I am so glad that you liked it! 🙂 Thank you for letting me know!
I just made this and it is AMAZING ?
I have made this soup several times now. It is consistently rich and delicious whether I use fresh tomatoes from our garden or canned San Marzano tomatoes, using my emulsion hand blender to purée everything right in the Crockpot. I like to put in a couple bay leaves while slow cooking. Yummmmm!
This is something that I totally crave. I love that it’s so easy and quick to make.
Tomato basil soup is my fave and I’m all about a slow cooker! Thanks for sharing and always love the addition of basil to most any recipe!!
I am all about using the slow cooker at the moment so I’ll have to try this recipe. Thanks for sharing.