This nutritious slow cooker lentil soup is packed with vegetables and creamy red lentils. I love to top it off with some crispy tortilla strips to add a bit of crunch too.

Tall image of red lentil soup topped with crispy tortilla strips in a brown speckled bowl. The bowl is on a light background. A spoonful of the soup is being lifted from the bowl. There are scattered tortilla strips and a small bowl of grated cheese at the top of the image and yellow napkin at the bottom of the image.
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This is a comforting, hearty soup that satisfies my Winter soup cravings, whilst also feeling like it’s doing me lots of good.

The lentils soften up and give the soup a creamy flavour and a lovely thick, filling texture.
The cheese and crispy tortilla strips give it that extra bit of luxury, so it doesn’t feel un-enjoyably healthy! You know where I’m coming from here right? No-one likes diet-soup. If it doesn’t taste good, it’s not worth eating!

So, what do we need to make these bowls of goodness?

📋 Soup Ingredients

Ingredients for slow cooker lentil soup on a wooden board.

📋 Crispy Tortilla Strips Ingredients

Ingredients for homemade crispy tortilla strips on a wooden board.

📺 Watch how to make it

Full recipe with detailed steps in the recipe card at the end of this post.

👩‍🍳PRO TIP If you want a smooth soup you can leave out the spinach and blend the soup up (it’ll go a murky colour if you blend it with the spinach).

Tall image of two bowls of red lentil soup topped with crispy tortilla strips in brown speckled bowls. The bowls are on a light background. There is a yellow napkin on the left of the bottom bowl. There is a small bowl of grated cheese, two gold spoons and some scattered tortilla strips around the bowls.

The kids go wild for the crispy tortilla strips. It’s worth making extra to nibble on later.

Tall image of red lentil soup topped with crispy tortilla strips in a brown speckled bowl. The bowl is on a light background. There is a yellow napkin on the left of the bowl.

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5 from 1 vote

Slow Cooker Lentil Soup Recipe

This nutritious slow cooker lentil soup is packed with vegetables and creamy red lentils. I love to top it off with some crispy tortilla strips to add a bit of crunch too.
Prep Time: 10 minutes
Cook Time: 6 hours
Total Time: 6 hours 10 minutes
Servings: 4
Course: Dinner, Lunch
Cuisine: British

Ingredients

Ingredients

  • 1 onion peeled and finely diced
  • 1 red bell pepper deseeded and finely diced
  • 3 carrots peeled and chopped into small pieces
  • 2 medium Maris Piper potatoes peeled and chopped into small cubes
  • 100 g (1/2 cup) red lentils
  • 720 ml (3 cups) vegetable stock
  • ½ tsp salt
  • ¼ tsp black pepper
  • 60 g (2 packed cups) baby spinach
  • 75 g (3/4 cup) grated cheddar cheese

Crispy Tortillas

  • 1 tbsp olive oil
  • ½ tsp garlic salt
  • ½ tsp dried parsley
  • 1 plain tortilla wrap
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Instructions 

  • Place the onion, red pepper, carrots, potatoes, red lentils, stock, salt and pepper into the slow cooker.
    1 onion, 1 red bell pepper, 3 carrots, 2 medium Maris Piper potatoes, 100 g (1/2 cup) red lentils, 720 ml (3 cups) vegetable stock, ½ tsp salt, ¼ tsp black pepper
  • Cook on high for 4 hours or low for 6 hours.
  • While the soup is cooking, make the crispy tortillas. Preheat the oven to 200C/400F.
  • Mix together the olive oil, garlic salt and dried parsley and brush onto one side of the tortilla.
    1 tbsp olive oil, ½ tsp garlic salt, ½ tsp dried parsley, 1 plain tortilla wrap
  • Slice the tortilla into thin strips or wedges, then place on a baking tray in a single layer.
  • Place in the oven to bake for 5-7 minutes, until crisp, then remove from the oven and allow to cool.
  • When the soup is ready, stir in the baby spinach and cheddar cheese.
    60 g (2 packed cups) baby spinach, 75 g (3/4 cup) grated cheddar cheese
  • Divide between bowls and top with pieces of crispy tortilla.

Video

Notes

Tip
Add a pinch of chilli flakes and smoked paprika to the tortilla strips for a smoky spicy flavour.
Make Ahead
You can make this soup ahead, then cool, cover and refrigerate for 2-3 days. Reheat in a pan on the hob/stove until piping hot.
Nutritional information is approximate per serving (this recipe serves 4)

Nutrition

Calories: 345kcal | Carbohydrates: 46g | Protein: 15g | Fat: 12g | Saturated Fat: 4g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Cholesterol: 19mg | Sodium: 1336mg | Potassium: 1082mg | Fiber: 12g | Sugar: 7g | Vitamin A: 10188IU | Vitamin C: 57mg | Calcium: 208mg | Iron: 4mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Some of the links in this post may be affiliate links – which means if you buy the product I get a small commission (at no extra cost to you). If you do buy, then thank you! That’s what helps us to keep Kitchen Sanctuary running. The nutritional information provided is approximate and can vary depending on several factors. For more information please see our Terms & Conditions.

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Hi, I'm Nicky and I love to cook! I want to share with you my favourite, delicious family friendly recipes. I want to inspire you to create fantastic food for your family every day.

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Comments

  1. Janice Brown says:

    Hi Nikki, do the dried lentils need to be boiled first before I proceed with the lentil soup?

  2. Mo says:

    5 stars
    I have actually added a carton of passata and a carton of cannelloni beans as mine just did not have a lot of taste to it. Will leave overnight and have tomorrow for lunch when I will reheat and add the grated cheese.

    Thank you for the recipe.

  3. Suzanne Brennan says:

    Could I use green lentils instead of red!

    1. Mo says:

      I dont see why you cannot use green lentils, better than no lentils.

  4. Annie says:

    Could I freeze the slow cooked lentil soup?