Low-carb vegetable soup with fennel and celery root

Low-carb vegetable soup with fennel and celery root

Creamy. So filling. This cozy low-carb vegetable soup is a delightful change of pace. Enjoy it plain or pair it with a protein—your choice!

Low-carb vegetable soup with fennel and celery root

Creamy. So filling. This cozy low-carb vegetable soup is a delightful change of pace. Enjoy it plain or pair it with a protein—your choice!
4 servingservings


  • 11 oz. 300 g fresh fennel, finely chopped, with the green part included
  • 8 oz. 230 g celery root finely chopped
  • 1 1 garlic clove finely choppedgarlic cloves finely chopped
  • 2 tbsp 2 tbsp olive oil
  • 1 tsp 1 tsp coriander seed
  • ¼ tsp ¼ tsp ground nutmeg
  • 3½ cups 850 ml water
  • 1 1 vegetable bouillon cubevegetable bouillon cubes
  • 5 oz. 140 g butter
  • 1 1 lemon, juicelemons, juice
  • salt and ground black pepper
  • ¼ cup (110 oz.) 60 ml (2.25 g) fresh dill or fresh cilantro, chopped
Serving suggestion
  • 10 oz. 280 g smoked salmon or cooked and peeled shrimp or fried halloumi cheese (optional)
This recipe has been added to the shopping list.


Instructions are for 4 servings. Please modify as needed.

  1. Fry all vegetables in oil in a big pot over high heat for a few minutes. Add coriander seeds and nutmeg. Stir and fry for another minute. Add water and bouillon cube.
  2. Bring to a boil and lower the heat. Let simmer for about 10 minutes or until everything is soft. Add butter and lemon juice and stir.
  3. Remove from the heat and use an immersion blender to mix to desired consistency. Season to taste with more salt and pepper. Garnish with fresh dill.
  4. Serve the soup as it is or topped with optional additions like smoked salmon, cooked and peeled shrimp, or fried cubes of halloumi cheese.


Try other real food toppings like sour cream, shredded parmesan, or toasted nuts or seeds.

You might also like

A little sneak peek...

With Diet Doctor Plus you get access to tons of keto meal plans, including dairy-free and vegetarian versions, meal plans adapted for intermittent fasting, quick-and-easy and budget keto meal plans. Below, see our latest one.

Keto: Bacon appreciation week #1

The rumors are true! Since bacon is full of protein and fat with no carbs, you can eat bacon every day on a keto diet.

This week, we highlight our favorite recipes that include — you guessed it — bacon. In this meal plan, you will enjoy recipes like Keto cheeseburger meatloaf, Keto cobb salad, and Crispy bacon and kale with fried eggs.

What is it that makes bacon so addictive? Is it the aroma? Is it the sound of the bacon sizzling in the pan or the sight of the beautifully crisp, fatty meat? Perhaps you would agree that it’s the first salty, smoky bite. It’s no wonder why bacon is loved by many.

Pro tip: Make sure to buy good quality bacon without sugar. Check out our bacon guide for cooking tips and more helpful information. You can also mix it up by using turkey bacon or beef bacon in place of pork bacon.

Full meal plan →

Get the full Diet Doctor experience for free

With Diet Doctor Plus, you get instant access to all of our delicious recipes, popular meal plans, meal planner tool, inspiring videos and educational guides. As a paying member you also help us in our mission to empower even more people. What are you waiting for? Sign up today and try for free for a month. Cancel anytime you want.


  1. Una
    Just happened to have fennel from my neighbour's home grown allotment. No celeriac/celery root until I go shopping in the morning so have done this recipe in two halves to make sure the fennel is as fresh as it can be - liked picked fresh this morning! Will cook the celeriac tomorrow, then blend together. Promises to be a great soup!
  2. Catharine
    This soup is absolutely delicious, it is warming and just the right thing for a cold January evening. Took no time to make, I let the soup simmer very slowly in the simmering oven of the aga, this can be done in any slow cooker to bring out all the earthy flavours of celery root and fennel. 5 stars from me!
  3. Alex
    How can the celery root be replaced in this recipe? In my country (Argentina) celery root is not available. Tks!!
    Reply: #4
  4. Kristin Parker Team Diet Doctor
    While we have not tested it, you could try radishes instead. They lose their sharp, peppery flavor when cooked.
  5. Danielle Bazinet
    So so so delicious. Bravo !

Leave a reply

Reply to comment #0 by