15-Minute Lentil Soup

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This healthy, hearty soup comes together super fast thanks to canned lentils.

Prep Time:
15 mins
Total Time:
15 mins
Servings:
1

Need a nutrition-packed lentil soup for one? Allow us to suggest this 15-minute recipe perfect for a cozy weeknight dinner. It uses canned lentils and store-bought vegetable or chicken broth—that's why it's so fast. The recipe starts with gently cooking finely chopped onion, carrot, and celery; this is called a mirepoix or aromatic base. The vegetables are cooked until soft. Then, the stock is poured into the pot and simmered briefly to develop the flavor before canned lentils are added. This is when the soup is ready for its final ingredient—a little red wine vinegar brings it all together. 

You really can’t beat this comforting, healthy, delicious, and easy weeknight meal for one. Serve with plenty of crusty bread for dipping and finishing touches of your choice.

15-minute lentil soup

Julia Hartbeck

Finishing Touches for This Quick Lentil Soup

Topping off the lentil soup with your favorite cheese or crispy bread for dunking can elevate the flavor of this meal. Pick your favorites below and be sure to add them to your grocery list:

Garnishes

  • Freshly grated Parmesan
  • Chopped fresh herbs, such as parsley or chives
  • Crispy bacon
  • A handful of baby spinach (stir it in just before the vinegar)

On the Side

  • Serve a hunk of your favorite cheese, such as Cheddar or an aged Gouda
  • Slices of crusty bread, like a baguette, for dunking
  • Soup crackers
  • Cornbread

Before you get started, rinse and drain the canned lentils—don't skip this step.

Cook Mode (Keep screen awake)

Ingredients

  • 1 teaspoon extra-virgin olive oil

  • ½ small onion, finely chopped

  • 1 carrot, finely chopped

  • 1 celery stalk, finely chopped

  • 1 garlic clove, minced

  • Coarse salt and ground pepper

  • 14 ½ ounces low-sodium vegetable or chicken broth

  • ¾ cup cooked lentils (from a 15-ounce can), rinsed and drained

  • 2 teaspoons red-wine vinegar

Directions

15-minute lentil soup - ingredients

Julia Hartbeck

  1. Cook vegetables:

    In a medium saucepan, heat oil over medium heat. Add onion, carrot, celery, and garlic; season with salt and pepper and cook, stirring occasionally, until onion softens, 3 to 5 minutes.

    15-minute lentil soup - mixing carrots and onions

    Julia Hartbeck

  2. Add broth and cook:

    Add broth, bring to a boil, and cook for 5 minutes.

    15-minute lentil soup - in pot

    Julia Hartbeck

  3. Add lentils and cook:

    Add lentils and cook until soup thickens slightly, 3 to 5 minutes. Stir in vinegar and season with salt and pepper.

    15-minute lentil soup - stirring soup

    Julia Hartbeck

Frequently Asked Questions

  • Can you overcook lentils in soup?

    Yes, you can overcook lentils in soup. When overcooked, the lentils become mushy. To avoid overcooking them, always follow the recipe directions and use the type of lentils called for in the ingredient list.

  • Why does my lentil soup taste bland?

    Your lentil soup tastes bland because lentils have a relatively mild taste and take well to seasoning. To avoid a bland lentil soup, use a flavorful broth. Build flavor through aromatics like onions and garlic, include fresh or dried herbs, and season the soup well with salt and pepper.

  • Do I need to soak lentils before cooking?

    You do not need to soak lentils before cooking. Lentils are small and have a softer shell compared to other larger legumes, which is why they can cook much faster and don't require soaking. Other legumes such as chickpeas or kidney beans require soak before cooking.

Other Quick Soup Recipes to Try

Originally appeared: Everyday Food, October 2009
Updated by
Victoria Spencer
Victoria Spencer, senior food editor, MarthaStewart.com
Victoria Spencer is an experienced food editor, writer, and recipe developer. She manages the Martha Stewart recipe archive and is always curious about new ingredients and the best techniques. She has been working in food media for over 20 years.

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