Instant Pot Lentil Soup Recipe: Set It And Forget It

Listen, I used to think lentil soup was boring health food. Then I discovered making it in the Instant Pot, and everything changed. This recipe turned me into a lentil soup evangelist.

Prep Time: 10 minutes
Cook Time: 20 minutes
Total Time: 30 minutes
Servings: 6-8 bowls

Why The Instant Pot Makes This Perfect

Ever spend hours babysitting soup on the stove? Yeah, that’s exhausting. The Instant Pot cooks lentils perfectly in a fraction of the time without any of that constant stirring nonsense.

I make this soup every single week now. It’s become my default “I need food fast but want something healthy” meal. The pressure cooker makes the lentils incredibly creamy.

The best part? You literally dump everything in, press a button, and walk away. No stirring, no watching, no stress. Just perfect soup waiting for you.

What Makes This Recipe Special

This isn’t bland, watery lentil soup. It’s rich, flavorful, and actually satisfying. IMO, this beats any canned soup by a mile and costs way less too.

The spices create layers of flavor that develop beautifully under pressure. You get that slow-cooked taste without spending your whole day in the kitchen.

Plus, lentils are packed with protein and fiber. You feel full for hours without that heavy, sluggish feeling. Win-win situation right here.

Ingredients You’ll Need

Let’s talk ingredients. Nothing fancy or hard to find. Just pantry staples that create something genuinely delicious.

For the base:

• 2 tablespoons olive oil
• 1 large onion, diced
• 3 carrots, diced
• 3 celery stalks, diced
• 4 cloves garlic, minced
• 1 pound dried green or brown lentils, rinsed
• 6 cups vegetable or chicken broth

For the flavor:

• 1 can diced tomatoes (14.5 oz)
• 2 teaspoons ground cumin
• 1 teaspoon smoked paprika
• 1/2 teaspoon turmeric
• 1 teaspoon dried thyme
• 2 bay leaves
• 1 teaspoon salt
• 1/2 teaspoon black pepper

Optional additions:

• 2 cups fresh spinach or kale
• 1 tablespoon lemon juice
• Fresh parsley for garnish
• Red pepper flakes for heat

Simple stuff, right? You probably have most of this sitting in your kitchen already. That’s the beauty of good soup recipes.

Choosing Your Lentils

Green or brown lentils work best for Instant Pot soup. They hold their shape and create that perfect hearty texture you want.

Avoid red lentils for this recipe. They turn mushy super fast under pressure. Save those for dal or purees where you actually want that texture.

Don’t presoak your lentils. The Instant Pot handles dried lentils perfectly without any soaking required. One less step to worry about.

Just rinse them quickly to remove any dust or debris. Takes 30 seconds and makes sure you’re starting with clean lentils.

Prepping Your Vegetables

Dice your onion, carrots, and celery into similar-sized pieces. This helps everything cook evenly. Nobody wants some vegetables mushy while others are still crunchy.

I aim for about half-inch pieces. Smaller than that and they disappear completely. Larger and they don’t soften enough in the cooking time.

Mince your garlic fresh if possible. The flavor is so much better than jarred garlic. Takes an extra minute but totally worth it.

Get everything chopped before you start cooking. Makes the whole process flow smoothly without scrambling to chop while things are already cooking.

Using The Sauté Function

Turn your Instant Pot to sauté mode. Let it heat up for a minute or two before adding the oil. You want it hot.

Add your olive oil and wait until it shimmers. Then toss in the onion, carrots, and celery. This is your aromatic base.

Cook these vegetables for about five minutes. Stir occasionally so nothing sticks to the bottom. You want them softened but not browned.

This step builds flavor that you can’t get by just pressure cooking everything together. Don’t skip it even though it’s tempting.

Adding Garlic And Spices

Toss in your minced garlic and cook for about one minute. Your kitchen will smell absolutely incredible at this point. FYI, this is my favorite part.

Add your cumin, smoked paprika, turmeric, and thyme. Stir everything together and let the spices toast for about 30 seconds. This releases their essential oils.

The spices will smell more fragrant and deeper. That’s when you know they’re ready. Don’t let them burn though—burned spices taste bitter.

This toasting step makes a huge difference in the final flavor. It’s what separates okay soup from amazing soup.

Adding Lentils And Liquid

Pour in your rinsed lentils. Stir them around with the vegetables and spices. You want them coated in all that flavor.

Add your diced tomatoes with their juice. The acidity from tomatoes brightens everything up and balances the earthiness of the lentils.

Pour in your broth. I use vegetable broth to keep it vegetarian, but chicken broth adds great depth too. Your choice here.

Drop in those bay leaves and add your salt and pepper. Give everything a good stir to combine. Make sure nothing’s stuck to the bottom.

Pressure Cooking Time

Turn off sauté mode. Put the lid on your Instant Pot and make sure the valve is set to sealing. This is crucial—no seal means no pressure.

Set it to manual or pressure cook mode on high pressure for 15 minutes. The Instant Pot will take about 10 minutes to come to pressure first.

Walk away. Seriously, just leave it alone. Go watch TV, fold laundry, whatever. The Instant Pot’s got this covered.

The lentils will cook perfectly while you’re doing literally anything else. This is why I love this appliance so much.

Natural Pressure Release

When the timer goes off, let the pressure release naturally for 10 minutes. Don’t touch that valve yet. This prevents the soup from spraying everywhere.

After 10 minutes, carefully turn the valve to venting. Any remaining pressure will release quickly. Stand back slightly just in case.

Wait until the float valve drops completely before opening the lid. Safety first, people. Hot steam is no joke.

Remove the lid away from you so the steam goes the other direction. Your soup is basically done at this point.

Final Touches

Remove and discard the bay leaves. They’ve done their job flavoring the soup. Nobody wants to accidentally bite into one.

If you’re adding spinach or kale, stir it in now. The residual heat will wilt it perfectly in about two minutes. Fresh greens make this soup even healthier.

Add a tablespoon of lemon juice. This brightens all the flavors and adds a fresh note. Taste your soup and adjust seasoning if needed.

Sometimes I add more salt or a pinch of red pepper flakes. Make it your own. This is your soup, season it how you like it.

Texture Adjustments

Is your soup too thick? Add more broth or water until you reach your preferred consistency. The lentils absorb liquid as they sit.

Want it creamier? Use an immersion blender to partially blend the soup. Blend about half and leave the rest chunky for texture.

Too thin? Let it sit for a few minutes. The lentils will continue absorbing liquid and thickening the soup naturally.

You can also simmer it on sauté mode with the lid off to reduce it. Just keep stirring so nothing sticks.

Serving Ideas

Ladle this soup into bowls while it’s hot. I love topping mine with fresh parsley and a drizzle of good olive oil.

Crusty bread on the side is basically mandatory. You need something for soaking up all that delicious broth. Sourdough works perfectly.

A dollop of Greek yogurt or sour cream adds creaminess and tang. Totally optional but really takes it up a notch.

Some people add croutons or crackers for crunch. Do whatever makes you happy. There’s no wrong way to enjoy this soup.

Storage And Meal Prep

This soup stores incredibly well. Let it cool completely, then transfer to airtight containers. It keeps in the fridge for up to five days.

The soup thickens as it sits. That’s totally normal. Just add a splash of broth when reheating to thin it out again.

You can freeze this for up to three months. Freeze in individual portions for easy grab-and-go lunches. Future you will be so grateful.

Reheat on the stove or in the microwave. Both work fine. I prefer the stove because it reheats more evenly.

Why Instant Pot Beats Stovetop

Stovetop lentil soup takes at least an hour of cooking and constant attention. The Instant Pot does it in 20 minutes hands-off.

You don’t need to watch it or stir it. No worrying about it burning or boiling over. Just set it and walk away.

The pressure cooking makes the lentils incredibly creamy. They break down slightly and create this naturally thick, luxurious texture.

Cleanup is easier too. One pot instead of multiple dishes. Less time cooking and cleaning means more time doing literally anything else.

Customization Ideas

Want to add meat? Toss in some diced ham or cooked sausage at the end. Adds smoky, savory flavor that’s absolutely delicious.

Make it spicier with jalapeños or extra red pepper flakes. I like adding a teaspoon of harissa paste for Middle Eastern vibes.

Try different vegetables. Potatoes, zucchini, or bell peppers all work great. Sweet potato adds natural sweetness that balances the spices beautifully.

Experiment with different herbs. Fresh rosemary or thyme instead of dried creates brighter, fresher flavor. Cilantro works if you’re into that.

Health Benefits

Lentils pack serious nutrition. They’re loaded with protein, fiber, and iron. One bowl gives you sustained energy without the crash.

This soup is naturally low in fat and calories but incredibly filling. Perfect for anyone watching their weight without wanting to feel deprived.

The vegetables add vitamins and antioxidants. You’re getting a complete, balanced meal in one bowl. Not bad for 30 minutes of work.

It’s also naturally vegan and gluten-free. Works for pretty much any dietary restriction except low-carb diets.

Common Mistakes To Avoid

Don’t overfill your Instant Pot. Leave at least two inches of space at the top. Lentils foam up and can clog the valve.

Avoid using quick release immediately. The soup will spray everywhere through the valve. Natural release prevents this mess.

Don’t forget to rinse your lentils. Sometimes they have small stones or debris. Quick rinse prevents any unpleasant surprises.

Stop adding salt too early. Lentils can get tough if salted before cooking. Add it after pressure cooking for best results.

FAQs

Can I use red lentils instead?

You can, but reduce cooking time to 8 minutes. Red lentils cook faster and break down completely, creating a thicker, creamier soup.

Do I need to soak lentils first?

Nope. The Instant Pot handles dried lentils perfectly without soaking. That’s one of the best things about pressure cooking lentils.

Can I make this without the sauté step?

You can, but you’ll lose a lot of flavor. Sautéing the vegetables and toasting the spices creates depth that dumping everything in raw can’t match.

My soup is too watery, how do I fix it?

Use the sauté function with the lid off to simmer and reduce. Or blend some of the soup to release starch and thicken it naturally.

Can I double this recipe?

Yes, but don’t exceed your Instant Pot’s max fill line. You need space for the foam and expansion during cooking. Better to make two batches.

What if I don’t have an Instant Pot?

Use a regular pot on the stove. Simmer for 45-60 minutes until lentils are tender. You’ll need to stir occasionally and watch the liquid level.

How do I prevent the burn notice?

Make sure you have enough liquid and nothing’s stuck to the bottom before sealing. Deglaze the pot well after sautéing vegetables.

Final Thoughts

There you go—perfect Instant Pot lentil soup that’s healthy, delicious, and ridiculously easy. This recipe has saved me countless busy weeknights.

Make a big batch this weekend. You’ll have healthy lunches ready all week. Your wallet and your body will both thank you.

Stop overthinking it and just press that button. Thirty minutes from now, you’ll have amazing soup ready to eat.