Easy slow cooker tomato soup recipe

Name: Easy slow cooker tomato soup recipe
Prep time: 10 min
Cook time: 3 h
Total time: 3 h 10 min
Yield: 4 serving(s)
Ingredients: 15 g fresh basil; 1 tomatoes, roughly chopped; 40 g butter; 3 garlic cloves, chopped; 1 onion, chopped; 1 carrot, chopped; 3 tbsp. tomato puree; 400 mL vegetable stock; 3 tbsp. crème fraiche

A hands-off slow cooker soup recipe, perfect for when you have a glut of tomatoes.

By Ailsa BurtUpdated: 02 June 2025

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There's nothing more comforting than a steaming bowl of creamy tomato soup, and we've made this recipe even easier by chucking all the ingredients into a slow cooker and letting it do all the work. For a heartier meal, serve with a crispy cheese toastie for dunking.

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Yields:

4 serving(s)

Prep Time:

10 mins

Cook Time:

3 hrs

Total Time:

3 hrs 10 mins

Cal/Serv:

206

Ingredients

15 g
fresh basil
1
tomatoes, roughly chopped
40 g
butter
3
garlic cloves, chopped
1
onion, chopped
1
carrot, chopped
3 Tbsp.
tomato puree
400 ml
vegetable stock
3 Tbsp.
crème fraiche

Directions

1. Step 1
  Pick the basil leaves off the stalks and set aside. Chop the stalks and add them to the pot of a slow cooker, along with all the remaining ingredients except the crème fraiche. Cover with the lid and cook on high for 3hr, until the tomatoes and vegetables are tender.
2. Step 2
  Stir in the crème fraiche and reserved basil leaves. Blend the soup (in batches if necessary) until completely smooth, adding a little splash of stock or water if the soup is too thick. Season to taste and serve.

Get ahead: Make up to end of step 3, then cool to room temperature and transfer to a sealable container. Reheat portions in a pan over a medium heat until piping hot. Will keep in the fridge in a sealed container for up to 3 days.

Try frying the tomatoes and vegetables first in a frying pan, over medium to high heat, to give them a slightly caramelised layer, and to help build extra flavour for the end result.

Feel free to blend it completely smooth, or if you prefer a slightly chunkier soup you can blend half smooth, and stir back in with the rest.

For more inspiration, check out our easy soup recipes.

For more tomato inspiration, check out our speedy one-pan tomato and pesto pasta recipe.