Roasted Tomato Bisque – Low Carb and Dairy-Free

by Irena

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Creamy tomato bisque that’s totally dairy free! This lovely low carb roasted tomato soup is thick and delicious, and full of healthy fats. So easy to make and the kids loved it too! Paleo and keto-friendly. This post is sponsored by California Avocados.

Dairy Free Low Carb Roasted Tomato Bisque in a white bowl with a tomato and avocado in the background

There are some recipe ideas that I know from the beginning will be amazing. And then there are some that take me by surprise, because I didn’t expect to like them that much. This delicious dairy free tomato bisque falls into the latter category. I knew it would be tasty enough but I didn’t expect to love it. And love it I did. It’s a fantastic summer soup recipe, perfect for using your fresh garden tomatoes.

What makes this dairy free soup so thick and rich and creamy? Avocados! Hooray for avocados.

Roasted tomato soup being poured into a white bowl from a blender

I’ve long noticed that avocados have a magic thickening power. Every time I blend them into something like a soup or a sauce, I have trouble actually getting the mixture thin enough to pour. They are way better than bananas as a thickener and they happen to be better for you too. More potassium, more fiber, more heart healthy fats.

Check out my Avocado Green Tea Smoothie here. Thick and rich and packed with power!

Seriously, dude, those avocados are amaze-balls. Especially those perfect California Avocados. We have about 1 month left on Cali Avo season and this makes me very very sad. If you see me crying in a corner in the next week or two, it’s because I have to say goodbye to my favourite green fruit for the next few months.

See also  Chicken & Prawn Laksa (Paleo, Gluten-Free)

Tomato bisque in a white bowl with avocado slices on top

How To Make Roasted Tomato Bisque

Anyway, I am trying to make the most of what’s left of the season and a light summery soup that used some of my homegrown tomatoes seemed like just the thing. These tomatoes are so perfectly sweet already, but roasting them brings out even more sweet summer flavor. So I tossed them with some oil, salt, and pepper and roasted them for about 30 minutes.

After that, it was ridiculously easy. I simply blended the tomatoes with an avocado and some chicken broth until it was a thick but pourable consistency. I rewarmed it gently in a pan and voila! Our low carb tomato soup was ready to go.

A spoonful of roasted tomato soup above a bowl full of the soup

Here’s the thing about using avocados as a thickener. You can play up the flavor or play it down, according to your taste. Two of my kiddos like avocado but the third one does not. I didn’t tell them that this roasted tomato soup contained any such thing and they all happily gobbled it down.

But you can also play up that creamy avocado flavor by adding some slices as garnish and perhaps a little chipped cilantro. Give it a little southwestern edge, as it were. It’s really up to you.

So there you have it. A healthy dairy-free tomato bisque recipe. You need this in your life!

Top down photo of roasted tomato bisque

Top down photo of roasted tomato bisque

Dairy Free Roasted Tomato Bisque

Creamy tomato bisque that’s totally dairy free! This lovely low carb roasted tomato soup is thick and delicious, and full of healthy fats. So easy to make and the kids loved it too! Paleo and keto-friendly.


Course: Soup

Cuisine: Soup

Keyword: roasted tomato soup, tomato bisque

Prep Time: 10 minutes

Cook Time: 30 minutes

Total Time: 40 minutes

Servings: 4 servings

Calories: 94kcal


  • 1 lb fresh tomatoes cored and coarsely chopped
  • 2 cloves garlic peeled
  • 2 tablespoon avocado oil
  • Salt and pepper
  • 1 California Avocado pitted and peeled
  • 3 cups chicken broth


  • Preheat oven to 425F and spread tomatoes and garlic in a single layer in a large baking dish. Drizzle with the oil and sprinkle with the salt and pepper. Bake 30 minutes or until tomatoes have caramelized.

  • Transfer to a food processor or high powered blender. Add the avocado and the chicken broth and blend until smooth.

  • Transfer to a pot to warm through before serving. It’s also delicious served chilled!

Nutrition Facts

Dairy Free Roasted Tomato Bisque

Amount Per Serving (1 cup)

Calories 94
Calories from Fat 71

% Daily Value*

Fat 7.9g12%

Carbohydrates 7.3g2%

Fiber 2.9g12%

Protein 3.7g7%

* Percent Daily Values are based on a 2000 calorie diet.

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