Red Lentil Soup with Lemon (Instant Pot or Crock-pot)
I have a new favorite soup, and this Red Lentil Soup with Lemon is it! It’s super easy, budget-friendly and pantry-friendly (which is particularly helpful these days). It can be made in an Instant Pot or a Slow Cooker/Crock-Pot (directions for both are below). Bonus: it’s dairy-free, gluten-free and vegan!

Why You’ll Love This Lentil Soup Recipe
- It’s fast and easy. If you make it in the Instant Pot, it takes about 30 minutes!
- It’s delicious comfort food. Made with simple ingredients, including fresh lemon, lentils and carrot, you and your whole family will love it!
- It’s a budget-friendly meal. Say no more, right!?
Are Lentils Nutritious?
Another reason to love this recipe – it’s good for you! Packed with B vitamins, magnesium, zinc and potassium, lentils give a delicious and affordable nutritious punch. They’re also made up of over 25% protein and are a great source of iron.
Lentils are edible seeds from the legume family, and you can find them in a variety of colors. This recipe uses red lentils, which are split, cook quickly and have a slightly sweet and nutty flavor.

Lemony Lentil Soup Ingredients
- Red Lentils
- Olive oil
- Onion
- Carrot
- Garlic
- Vegetable broth
- Water
- Red curry paste
- Fresh lemon
- Spices – Ground cumin, salt and pepper
- Parsley for garnish (optional)InICti
Lentil Soup Instructions: Instant Pot
- Prep – wash the lentils; wash and chop the vegetables
- Sauté – sauté the oil, onion and carrot for 5 minutes on the sauté program on your Instant Pot
- Cook – add the remaining ingredients, stir and cover/lock the lid; set the vent to “sealing” then cook on high pressure for 8 minutes, followed by a quick-release
- Blend – puree the soup using a hand immersion blender (or carefully transfer it to a traditional blender in batches) and blend until smooth.
- Finish, Serve and Enjoy! – taste and, if desired, add an additional 1 Tbsp of lemon juice + a little salt and pepper to suite your person taste. Stir and then serve in bowls, topped with a lemon slice and/or parsley to garnish. Dig in and enjoy!

Instructions: Crock-Pot
- Prep – set your crock-pot on high, close the lid and let it warm up with you prep the food
- Sauté – add the oil, onion and carrot to the crock-pot; cover and let cook for 5 minutes
- Cook – add the remaining ingredients; cook on high for about 3 hours or on low for 6 (or until the lentils are soft)
- Blend – puree the soup using a hand immersion blender (or carefully transfer it to a traditional blender in batches) and blend until smooth.
- Finish, Serve and Enjoy! – taste and, if desired, add an additional 1 Tbsp of lemon juice + a little salt and pepper to suite your person taste. Stir and then serve in bowls, topped with a lemon slice and/or parsley to garnish. Dig in and enjoy!
Pin it/save it and make it some time. Please let me know if you do. That always makes my day!

Red Lentil Soup with Lemon
Equipment
- 1 Instant Pot OR Crock-Pot
Ingredients
- 1 Tbsp olive oil
- 1 medium onion, diced
- 2 medium carrots, diced
- 3 cloves of garlic, minced
- 2 cups dry red lentils, rinsed and picked over
- 4 cups vegetable broth
- 2 cups water
- 2 tsp red curry paste
- 2 tsp ground cumin
- 1 lemon; juice of 1 lemon (1/4 cup + 1 Tbsp)
- 3/4 tsp sea salt
- 1/4 tsp black pepper
- salt and pepper to taste
- garnish with lemon slices and/or chopped parsley
Instructions
- Satuee oil, onion and carrot for 5 minutes on the sautee program on your Instant Pot
- Add the rest of the ingredients, stir and cover/lock the lid
- Set the vent to “sealing” then cook on high pressure for 8 minutes, followed by a quick release.
- Blend the soup using a hand immersion blender (or carefully transfer to a traditional blender in batches) and blend to puree.
- Taste and, if desired, add an additional 1Tbsp of lemon juice + a little salt and pepper to taste then blend a little to stir it in.
So delicious and easy. Perfect for a fall or winter evening.