Lentil and Vegetable Soup

Featured in: Weeknight Dinners

This satisfying soup brings together tender green or brown lentils with a colorful medley of roasted vegetables. The roasting process caramelizes carrots, celery, zucchini, bell peppers, and cherry tomatoes, creating depth of flavor before they simmer with the lentils in vegetable broth.

Dried thyme, oregano, and smoked paprika infuse the broth with aromatic warmth, while a splash of fresh lemon juice brightens the finished bowl. The method is straightforward: roast the vegetables first for sweetness, then simmer everything together until the lentils are perfectly tender.

This versatile soup adapts easily to your vegetable preferences and pantry staples. It freezes beautifully and tastes even better the next day as flavors continue to develop.

Updated on Wed, 28 Jan 2026 10:09:00 GMT
A steaming bowl of Lentil and Vegetable Soup garnished with fresh parsley, served with crusty bread for a cozy, nourishing meal. Save
A steaming bowl of Lentil and Vegetable Soup garnished with fresh parsley, served with crusty bread for a cozy, nourishing meal. | flashoven.com

The aroma of this lentil soup still takes me back to that drizzly autumn Saturday when I first threw it together. With rain tapping against the kitchen window, I rummaged through my vegetable drawer seeking comfort and discovered this combination. As the vegetables roasted, their sweet caramelization filled my apartment, promising the nourishment I was craving.

Last winter, my neighbor came down with a terrible cold, and I brought over a container of this soup. Three days later, she knocked on my door, empty container in hand, insisting I write down the recipe immediately. She claimed her recovery was directly linked to the smoky, herbal broth and tender lentils, and honestly, who am I to argue with such delightful feedback?

Ingredients

  • Green or brown lentils: The backbone of this soup, I prefer these varieties because they hold their shape without turning mushy, creating that perfect balance between broth and substance.
  • Roasted vegetables: Carrots, celery, zucchini, bell pepper, and cherry tomatoes develop a caramelized sweetness in the oven that ordinary boiled vegetables simply cannot match.
  • Smoked paprika: My secret weapon that gives this soup a complexity that makes people think it simmered all day, when really its the paprikas natural smokiness doing all the heavy lifting.
  • Fresh lemon juice: A last-minute splash brightens everything up, cutting through the earthiness of the lentils with a hint of acidity that makes all the flavors pop.

Instructions

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Roast the veggies:
Preheat your oven to 425°F and toss those colorful chunks of carrots, celery, zucchini, bell pepper, and halved cherry tomatoes with olive oil, salt, and pepper. Spread them on a baking sheet, giving them enough space to caramelize rather than steam.
Start the base:
While those vegetables work their magic in the oven, sauté the onions in your soup pot until they turn translucent and start to sweeten. Add the garlic just for a minute, letting it become fragrant without burning.
Build the soup:
Once your roasted vegetables develop those beautiful browned edges, add them to the pot along with the lentils and seasonings. The sizzle when they hit the pot is one of my favorite kitchen sounds.
Simmer to perfection:
Let everything bubble away gently for about 25 minutes, or until the lentils have softened but still offer a slight bite. Watch the pot transform from individual components into a harmonious soup right before your eyes.
Finish with brightness:
Remove that bay leaf, then taste and adjust with salt, pepper, and a squeeze of lemon juice. Sometimes I add a bit more smoked paprika if I want to emphasize that smoky depth.
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Colorful roasted vegetables and tender lentils simmer in this savory Lentil and Vegetable Soup, ready to be served hot. Save
Colorful roasted vegetables and tender lentils simmer in this savory Lentil and Vegetable Soup, ready to be served hot. | flashoven.com

One particularly memorable evening, I served this soup at an impromptu gathering after we lost power during a storm. Huddled around my gas stove with candles providing our only light, this humble pot of lentil soup became an anchor of warmth and normalcy. Even after the electricity returned, my friends still mention that night as one of their favorite memories, proving that sometimes the simplest meals create the strongest connections.

Make-Ahead Options

This soup actually improves after a day in the refrigerator, as the flavors have more time to meld together. Ive learned to make a double batch specifically to have leftovers, which thicken slightly overnight and develop an even deeper flavor profile. Just add a splash of broth when reheating if its become too thick for your liking.

Serving Suggestions

While crusty bread is the obvious partner, Ive discovered that a spoonful of tangy Greek yogurt swirled into each bowl adds a creamy richness that plays beautifully against the earthy lentils. For dinner guests, I sometimes serve smaller portions in mugs as a starter before the main course, which always earns compliments about the thoughtful presentation.

Seasonal Adaptations

The beauty of this soup lies in its flexibility across seasons. In summer, I emphasize more zucchini and fresh herbs from my windowsill garden, while winter versions might feature butternut squash and a heartier helping of smoked paprika for additional warmth.

  • Spring variation: Add fresh peas and asparagus in the last few minutes of cooking for brightness.
  • Summer twist: Stir in fresh basil instead of parsley and use yellow squash alongside zucchini.
  • Winter comfort: Add a parmesan rind to the simmering broth for a subtle umami depth.
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Close-up of Lentil and Vegetable Soup featuring caramelized vegetables and a rich broth, perfect for a comforting weeknight dinner. Save
Close-up of Lentil and Vegetable Soup featuring caramelized vegetables and a rich broth, perfect for a comforting weeknight dinner. | flashoven.com

Whether youre seeking comfort on a cold day or a light yet satisfying meal, this lentil and vegetable soup delivers warmth that goes beyond temperature. Share it with someone who needs nurturing, and watch as it works its simple, soulful magic.

Recipe Questions & Answers

What type of lentils work best?

Green or brown lentils hold their shape beautifully during simmering, making them ideal for this soup. Red lentils tend to break down and create a thicker, more porridge-like consistency, which works but changes the texture significantly.

Can I skip the roasting step?

You can sauté all vegetables directly in the pot, though roasting concentrates their natural sugars and adds caramelized depth. If short on time, sauté the harder vegetables like carrots and celery for 8-10 minutes before adding broth.

How long does this soup keep?

Stored in an airtight container in the refrigerator, the soup maintains quality for 4-5 days. The lentils continue absorbing liquid, so you may need to thin with additional broth or water when reheating.

Is this soup freezer-friendly?

Yes, it freezes exceptionally well for up to 3 months. Cool completely before transferring to freezer-safe containers, leaving some headspace for expansion. Thaw overnight in the refrigerator before gently reheating.

What can I serve with this soup?

Crusty bread, warm baguette slices, or garlic toast make perfect accompaniments for dipping. A simple green salad with vinaigrette provides a fresh contrast. For extra protein, serve alongside a grilled cheese sandwich or add cooked beans.

Can I make this in a slow cooker?

Sauté the onion and garlic first, then add everything to the slow cooker. Cook on low for 6-7 hours or high for 3-4 hours until lentils are tender. Add the lemon juice and fresh parsley just before serving.

Lentil and Vegetable Soup

Hearty soup combining tender lentils with roasted vegetables in a fragrant herb broth, perfect for nourishing meals.

Prep Time
15 min
Baking/Cooking Time
45 min
Time Required
60 min
Recipe by Harper Ward

Recipe Type Weeknight Dinners

Skill Level Easy

Cuisine International

Makes 4 Number of Servings

Diet Considerations Vegan-Friendly, Milk-Free, Wheat-Free

What You’ll Need

Lentils

01 1 cup dried green or brown lentils, rinsed

Vegetables

01 2 medium carrots, peeled and diced
02 2 celery stalks, diced
03 1 medium zucchini, diced
04 1 red bell pepper, diced
05 1 medium yellow onion, chopped
06 3 cloves garlic, minced
07 1 cup cherry tomatoes, halved
08 2 tablespoons olive oil

Broth & Seasoning

01 6 cups vegetable broth
02 1 teaspoon dried thyme
03 1 teaspoon dried oregano
04 1 teaspoon smoked paprika
05 1 bay leaf
06 Salt and freshly ground black pepper to taste

Finishing

01 2 tablespoons chopped fresh parsley
02 Juice of 1/2 lemon

How-To Steps

Step 01

Prepare vegetables and roast: Preheat oven to 425°F. Toss carrots, celery, zucchini, bell pepper, and cherry tomatoes with 1 tablespoon olive oil, salt, and pepper. Spread on a baking sheet and roast for 20 minutes until lightly caramelized.

Step 02

Sauté aromatics: Heat remaining 1 tablespoon olive oil in a large pot over medium heat. Add onion and sauté for 4 minutes until softened. Add minced garlic and cook for 1 minute.

Step 03

Combine and simmer: Stir in rinsed lentils, roasted vegetables, vegetable broth, thyme, oregano, smoked paprika, and bay leaf. Bring to a boil, then reduce heat and simmer uncovered for 25 minutes until lentils are tender.

Step 04

Season and finish: Remove bay leaf. Taste and adjust seasoning with salt, pepper, and lemon juice as desired. Serve hot, garnished with fresh parsley.

Essential Tools

  • Large soup pot
  • Baking sheet
  • Chef's knife
  • Cutting board
  • Wooden spoon

Allergy Details

Always verify every ingredient for allergens. Talk to a healthcare provider if you're unsure.
  • Contains no major allergens. Check broth and packaged lentils for potential cross-contamination if severely allergic

Nutrition per Serving

Details shown are for general reference. Don’t use as a substitute for medical advice.
  • Calories: 265
  • Fats: 6 g
  • Carbohydrates: 41 g
  • Proteins: 13 g