Instant Pot Lentil and Sweet Potato Stew for Fiber-Rich Meal Prep

Hearty, plant-forward Instant Pot stew packed with fiber from brown lentils and sweet potatoes, brightened with lemon and spinach. This one-pot vegan recipe pressure-cooks to a thick, comforting stew that’s perfect for batch-cooking lunches and weeknight dinners.

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About This Recipe

This Instant Pot Lentil and Sweet Potato Stew is built around two reliable ideas: texture contrast and hands-off depth. Sweet potatoes soften into creamy pockets while brown or green lentils keep their shape and add a pleasantly toothsome bite, so each spoonful balances starch, body and a savory broth punctuated by smoked paprika and cumin. Browning the aromatics and briefly toasting the spices in the pot before adding liquid gives the stew a roasted, rounded flavor that pressure cooking alone can’t create.

It’s a pragmatic recipe for people who want fiber-forward, plant-based lunches that won’t feel repetitive. The formula — sauté, deglaze, pressure-cook, finish with greens and lemon — is forgiving, which makes it ideal for batch-cooking: the stew thickens overnight in the fridge, brightens with acid the next day, and reheats without falling apart. Small adjustments (a mash of sweet potato for creaminess, an extra pinch of smoked paprika for depth) let you tailor it to weeknight appetite or a sturdier weekend bowl.

Plan your timing

5:41 pm–5:56 pm→Prep the ingredients
5:56 pm–6:03 pm→Sauté the aromatics
6:03 pm–6:07 pm→Add lentils, sweet potato, tomatoes and broth
6:07 pm–6:42 pm→Pressure cook
6:42 pm–6:45 pm→Finish and adjust seasoning
6:45 pm–6:55 pm→Portion and store for meal prep
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Ingredients for Instant Pot Lentil and Sweet Potato Stew for Fiber-Rich Meal Prep

  • 1 tbsp extra-virgin olive oil
  • 1 medium yellow onion, chopped
  • 4 cloves garlic cloves, minced
  • 2 medium carrots, peeled and diced
  • 1 1/2 cups brown lentils, rinsed
  • 2 medium sweet potatoes, peeled and diced
  • 1 can (14.5 oz) canned diced tomatoes
  • 4 cups low-sodium vegetable broth
  • 1 tbsp spice blend (ground cumin, smoked paprika, turmeric, salt & black pepper)
  • 4 cup (packed) baby spinach (packed)
  • 1 lemon lemon, juiced

How to Make Instant Pot Lentil and Sweet Potato Stew for Fiber-Rich Meal Prep

  1. Step 1: Prep the ingredients

    Active 15 min

    Peel and dice the sweet potatoes and carrots, finely chop the onion, and mince the garlic. Rinse the brown lentils under cold water and drain; open the canned diced tomatoes and measure the vegetable broth, spice blend, spinach, and lemon so everything is ready.
    Prep the ingredients
  2. Step 2: Sauté the aromatics

    Active 7 min

    Select Sauté on the Instant Pot and add the olive oil. When hot, add the chopped onion, minced garlic and diced carrots and cook, stirring often, until the onion is translucent and the carrots begin to soften, about 5–7 minutes.

    For this step

    • 1 tbspextra-virgin olive oil
    • 1 mediumyellow onion, chopped
    • 4 clovesgarlic cloves, minced
    • 2 mediumcarrots, peeled and diced
    Sauté the aromatics
  3. Step 3: Add lentils, sweet potato, tomatoes and broth

    Active 4 min

    Add the rinsed brown lentils, diced sweet potatoes, canned diced tomatoes with their juices, vegetable broth, and the spice blend to the pot. Stir thoroughly, scraping the bottom to deglaze so nothing is stuck, and make sure ingredients are evenly distributed.

    For this step

    • 1 1/2 cupsbrown lentils, rinsed
    • 2 mediumsweet potatoes, peeled and diced
    • 1 can (14.5 oz)canned diced tomatoes
    • 4 cupslow-sodium vegetable broth
    • 1 tbspspice blend (ground cumin, smoked paprika, turmeric, salt & black pepper)
    Add lentils, sweet potato, tomatoes and broth
  4. Step 4: Pressure cook

    Active 3 min · Passive 32 min

    Cancel Sauté, secure the Instant Pot lid and set it to High pressure for 12 minutes. Note the pot will take about 8–12 minutes to reach pressure; after the cook time allow a 10-minute natural release, then carefully quick-release any remaining pressure before opening.
    Pressure cook
  5. Step 5: Finish and adjust seasoning

    Active 3 min

    Stir in the baby spinach and let it wilt into the hot stew, about 1–2 minutes. Mash a few sweet potato pieces against the side of the pot for a thicker texture, then stir in the lemon juice and taste; adjust salt and pepper as desired.

    For this step

    • 4 cup (packed)baby spinach (packed)
    • 1 lemonlemon, juiced
    Finish and adjust seasoning
  6. Step 6: Portion and store for meal prep

    Active 10 min

    Divide the stew into airtight containers (about 1 to 1 1/4 cups per serving). Cool slightly before refrigerating for up to 5 days or freezing for up to 3 months; reheat in the microwave or on the stove until warmed through.
    Portion and store for meal prep
  1. Peel and dice the sweet potatoes and carrots, finely chop the onion, and mince the garlic. Rinse the brown lentils under cold water and drain; open the canned diced tomatoes and measure the vegetable broth, spice blend, spinach, and lemon so everything is ready.
  2. Select Sauté on the Instant Pot and add the olive oil. When hot, add the chopped onion, minced garlic and diced carrots and cook, stirring often, until the onion is translucent and the carrots begin to soften, about 5–7 minutes.
  3. Add the rinsed brown lentils, diced sweet potatoes, canned diced tomatoes with their juices, vegetable broth, and the spice blend to the pot. Stir thoroughly, scraping the bottom to deglaze so nothing is stuck, and make sure ingredients are evenly distributed.
  4. Cancel Sauté, secure the Instant Pot lid and set it to High pressure for 12 minutes. Note the pot will take about 8–12 minutes to reach pressure; after the cook time allow a 10-minute natural release, then carefully quick-release any remaining pressure before opening.
  5. Stir in the baby spinach and let it wilt into the hot stew, about 1–2 minutes. Mash a few sweet potato pieces against the side of the pot for a thicker texture, then stir in the lemon juice and taste; adjust salt and pepper as desired.
  6. Divide the stew into airtight containers (about 1 to 1 1/4 cups per serving). Cool slightly before refrigerating for up to 5 days or freezing for up to 3 months; reheat in the microwave or on the stove until warmed through.

Instant Pot Lentil and Sweet Potato Stew for Fiber-Rich Meal Prep Tips

Bloom spices early

Add the spice mix to the hot oil with the garlic for 30–60 seconds to release essential oils and deepen the stew’s flavor before you add liquids.

Deglaze the pot

After sautéing, pour a splash of broth and scrape the bottom to lift browned bits so they don’t trigger a burn notice and to intensify the base.

Lentil choice matters

Use brown or green lentils — they hold their shape under pressure; red lentils will break down into a puree-like texture.

Uniform dice for even cooking

Cut sweet potatoes into roughly 1-inch cubes so they cook through at the same rate as the lentils and avoid mushy pieces.

Finish with acid and greens

Stir in spinach and lemon juice off the heat to preserve color and brightness and to sharpen the overall flavor profile.

Instant Pot Lentil and Sweet Potato Stew for Fiber-Rich Meal Prep Variations and Substitutions

Hearty French lentils

Swap brown/green lentils for Puy (French) lentils and increase pressure time by 1–2 minutes for a firmer, peppery bite that stands up to robust toppings.

Smoky chipotle twist

Add one minced canned chipotle in adobo with the spices for a smoky, spicy kick; reduce smoked paprika slightly to avoid competing smokiness.

Make it stewier

For a creamier texture, mash a cup of the cooked sweet potato directly in the pot or stir in 1/3 cup coconut milk after pressure cooking.

Add bulk with grains

Stir in cooked farro, brown rice or bulgur at serving to stretch portions and add chew; don’t pressure-cook them with the lentils unless adjusting liquid and times.

How to Store and Make Instant Pot Lentil and Sweet Potato Stew for Fiber-Rich Meal Prep Ahead

Cool the stew to room temperature before sealing it in airtight containers to avoid condensation and sogginess. Refrigerate up to 5 days or freeze in portioned containers for up to 3 months; thaw in the fridge overnight before reheating. Reheat gently on the stove or in the microwave, adding a splash of broth or water to loosen the texture and reviving brightness with a fresh squeeze of lemon.

What to Serve With Instant Pot Lentil and Sweet Potato Stew for Fiber-Rich Meal Prep

Serve bowls over a bed of fluffy brown rice, quinoa or spooned into a warm pita for contrasting textures. Top with toasted pumpkin seeds or chopped herbs (cilantro or parsley) and a dollop of plain yogurt or tahini for creaminess. Pair with a crisp green salad or a lemony cucumber slaw and a citrus-forward white wine or herbaceous iced tea.

Instant Pot Lentil and Sweet Potato Stew for Fiber-Rich Meal Prep FAQs

Can I use red lentils instead?

Yes, but red lentils will disintegrate and create a thicker, porridge-like stew rather than distinct beans; reduce pressure time by several minutes and expect a smoother texture.

What causes an Instant Pot burn notice and how do I prevent it?

Burn notices happen when food sticks to the bottom; prevent it by properly deglazing with broth after sautéing and making sure no browned bits remain before sealing the lid.

Can I double the recipe in my Instant Pot?

You can increase quantities but avoid filling the pot above the max fill line for pressure cooking; if doubling, pick a larger model or cook in two batches to ensure safe, even cooking.

How do I thicken the stew if it’s too thin?

Simmer uncovered on Sauté to reduce liquid, or mash a cup of the cooked sweet potato into the stew to naturally thicken and add creaminess.

Can I add greens other than spinach?

Yes — sturdy greens like kale or Swiss chard work well but add them a few minutes earlier and remove tough stems; baby spinach is best for wilting quickly at the end.

Jake Woods

About the author

Jake Woods

Hello, I'm Jake. I started this recipe site with the idea that I hated recipe websites that overwhelm you with long stories and ads just to see plain content that's not helpful. My goal is to provide you with quality recipes, simple ideas and a fun cooking experience. There's lots of fun things to cook, and I think as you browse the site you'll find that TopShelf.Recipes is the place for quality recipes on the web.

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Nutrition Facts

Per serving: about 1¾ cups

Calories639
Total Fat8.5g
Saturated Fat1.7g
Trans Fat0g
Polyunsaturated Fat3.9g
Monounsaturated Fat1.4g
Cholesterol4mg
Sodium1211mg
Total Carbohydrates115.1g
Dietary Fiber17.3g
Total Sugars14.2g
Includes Added Sugars0g
Protein31.3g
Vitamin D0μg
Calcium211mg
Iron9.8mg
Potassium1600mg

Nutrition values are estimated from USDA ingredient data and may vary based on preparation, brands, and portion sizes. Values are provided for informational purposes only.

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Instant Pot Lentil and Sweet Potato Stew for Fiber-Rich Meal Prep

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