French Tomato Soup with fennel and orange in cast iron

Another cast iron cookware recipe.   French tomato soup with fennel and orange all done with cast iron but with a little twist.

French tomato soup, with its acidic tomatoes, can pick up a metallic taste when cooked in a seasoned cast iron skillet.  To avoid that, this soup is started in a cast iron pan, then transferred to a blender.  If you have an enameled cast iron skillet use it and skip the blender.


3 tablespoons unsalted butter

1 small baguette, torn into bite-sized pieces


1 onion, peeled and quartered

1 fennel bulb, cored and roughly chopped

2 carrots, peeled and chopped

2 garlic cloves, peeled

1 teaspoon minced fresh thyme

3 cups vegetable broth

2 tablespoons butter

Juice and zest of 1 small orange

4 small tomatoes, cored and roughly chopped

1 can crushed tomatoes(28 oz can)

Ground black pepper


Arrange a wire rack over a baking sheet

Melt the unsalted butter in a large Dutch oven over medium-high heat.  Add the torn bread and cook until browned, turning frequently.  Remove with a slotted spoon and season immediately with salt.  Reserve until the soup is ready.

Wipe out Dutch oven leaving a bit of oil behind, and set aside.

In a food processor, coarsely chop the onion, fennel, carrots, and garlic.

Heat the Duch oven over medium-high heat, add the onion mixture and thyme, and cook until soft, about 6 minutes, stirring frequently.  Add the broth and butter and bring to a simmer.

Wipe out the work bowl of the food processor and carefully ladle the mixture back into it.  Add the orange juice and half of the orange zest, rough-chopped tomatoes, and crushed tomatoes.   Process until smooth.  Season with salt and pepper to taste.

Serve garnished with a few croutons, fennel fronds, and the remaining orange zest.

What are your thoughts on this delicious tomato soup?  Please leave us a comment below.

4 Comments on "French Tomato Soup with fennel and orange in cast iron"

  1. Great winter recipe! I can’t wait to make this for my family. I think this would go great with a nice homemade loaf of bread 🙂

    • Thanks for stopping by this site.
      Yes, agreed, great winter recipe and it would be awesome with bread. Enjoy cooking and please come back to check out our other recipes in the future.

  2. I can’t wait to try this recipe and share with the family. I am always on the lookout for a great tomato soup. Do you know if I could slow cook this on my Traeger wood pellet grill to add some smoky flavoring too it? How do you think I would have to adjust the cooking times if I tried it this way?


    • Hello, thanks for stopping by my site.
      This is a really great tomato soup recipe, please give it a try and good luck.
      Not sure if the tomato soup would take on much smokey flavor. If you do want to add some smoke, I would advise looking into the bottled liquid smoke.
      Good luck with cooking on the grill.

Leave a comment

Your email address will not be published.