Slow Cooker Broccoli Cheese Soup

Slow Cooker Broccoli Cheese Soup- a slow cooker version of the classic soup recipe, that makes a warm and comforting lunch. It also freezes beautifully. Syn-free on Slimming World and under 300 calories.

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Today, I'm sharing a recipe for one of my childhood favourites, broccoli cheese soup.  It's the only soup I remember my mum making on a regular basis- enormous saucepans full of broccoli boiling away on the hob with cheddar cheese stirred through.

As you know, I am a big fan of making soup in the slow cooker, so I don't have to stand over it, or even check on it regularly. In fact, I can even confidently go out leaving something cooking, which I would never do with a pan on the hob.

Broccoli cheese soup works beautifully in the slow cooker. Broccoli, carrot and onion are pretty standard in a broccoli cheese soup, but I also use potato to add some creamy thickness. Many recipes will ask you to make a traditional cheese sauce to add to the soup, but my feeling is that my slow cooker is supposed to save me time and effort, so why would I want to faff about with a cheese sauce? Some other recipes replace this by adding a tin of condensed soup. With that idea, I think if I'm buying a tin of soup, why not just eat the tin of soup...? No- I want home-made broccoli soup, so I use potato and cheddar to get the thick, cheesiness that I am after. The bonus is that it makes it more filling too! 

I have suggested 100g of grated cheese for the soup, but go ahead and use more if you love cheese! The more mature the cheese, the less you'll need, because it will have a stronger flavour. 

You can make nice big batches of this soup, and it will freeze well. Like most soups, it will need a really good stir when it's defrosted and re-heated, and then it will be delicious.

If you're doing Slimming World, then use the cheddar cheese as your HEX A and the soup is syn-free!

Looking for more slow cooker soups?

Slow Cooker Smoky Butternut Squash and Pepper Soup
Slow Cooker Parsnip and Ginger Soup

Slow Cooker Broccoli Cheese Soup ingredients and cooked in a bowl

Make Slow Cooker Broccoli Cheese Soup

For a printable recipe card, go to the end of this post.

Main steps to the recipe:

Slow Cooker Broccoli Cheese Soup ingredients

Prepare the veg

Slow Cooker Broccoli Cheese Soup before blending

Add the garlic and the veg stock

Slow Cooker Broccoli Cheese Soup blended

When cooked, blend the soup to your preferred thickness

Slow Cooker Broccoli Cheese Soup with grated cheese

Add the grated cheese and mix through until melted.

Slow Cooker Broccoli Cheese Soup in a bowl

soup, slow cooker, broccoli cheese
lunch, appetiser
Yield: 4Pin it

Slow Cooker Broccoli Cheese Soup

Slow Cooker Broccoli Cheese Soup- a slow cooker version of the classic recipe, that makes a warm and comforting lunch. Syn-free on Slimming World.
prep time: 15 minscook time: 5 hourtotal time: 5 hours and 15 mins


  • 500g broccoli
  • 3 medium carrots
  • 3 medium potatoes
  • 1 onion
  • 2 cloves of garlic, crushed
  • 400ml vegetable stock or chicken stock
  • 100g mature cheddar, grated


1) Peel the carrots and the potatoes and chop into medium chunks.
2)  Peel and chop the onion into small pieces.
3) Chop the very end off the broccoli stalk and then cut the stalk and the florets into pieces.
4) Add all the veg to the slow cooker.
5)  Add the garlic and the stock and give it all a good stir.
6) Put the slow cooker on high for 2-3 hours (or medium for 3-4, or low for 4-5).
7) When the veg has softened well, use a stick blender to whizz it up. I prefer to leave it as not quite smooth, so you can see little specks of broccoli.
8) Switch the slow cooker to low, if it's not already, and then add the grated cheese.
9) Stir the cheese through well and then leave for another 30 minutes.
10) Season with salt and black pepper and serve!


Syn-free on Slimming World if you use the cheese for your Hex A.

Using reduced fat cheese reduces the calorie total by 25 per portion.
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Created using The Recipes Generator