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Hearty, warming, and the kind of soup that gets better the next day. This lentil soup starts with bacon and builds from there — a rich, smoky base with tender lentils, vegetables, and just enough vinegar at the end to make everything pop.
One pot, 45 minutes, and six satisfying servings. Exactly what a soup should be.
Why You’ll Love This Recipe
- Bacon makes the base — It adds a smoky depth right from the start that sets this apart from a basic vegetable lentil soup.
- Thick, filling, and genuinely satisfying — Lentils are packed with protein and fiber. This soup keeps you full.
- One pot, easy cleanup — Everything cooks in a single pot from start to finish.
- Ready in 45 minutes — No soaking required. Lentils go in dry and come out perfectly tender.
- The vinegar finish is everything — A splash of wine vinegar at the end brightens the whole bowl and balances the richness beautifully.
- Freezes beautifully — Make a big batch and freeze portions for the easiest weeknight dinner.
Ingredients
- 4 slices bacon, chopped
- 1 tablespoon olive oil
- 1 large onion, diced
- 2 medium carrots, diced
- 2 celery stalks, diced
- 3 cloves garlic, minced
- 1½ cups dry brown or green lentils, rinsed
- 1 can (14.5 oz) diced tomatoes
- 6 cups vegetable or chicken broth
- 1 teaspoon cumin
- 1 teaspoon paprika
- 2–3 bay leaves
- ¾ teaspoon salt, adjust to taste
- ½ teaspoon black pepper, adjust to taste
- 1½ tablespoons red or white wine vinegar
- Chopped cilantro or parsley for garnish (optional)
Step-by-Step Instructions
Step 1: Cook the Bacon
Heat the olive oil in a large pot over medium heat. Add the chopped bacon and cook until it renders its fat and starts to crisp at the edges — about 4–5 minutes. The bacon fat becomes the flavor base for the entire soup, so don’t skip this step and don’t drain the fat.
Step 2: Sauté the Vegetables
Add the diced onion, carrots, and celery directly to the pot with the bacon and cook for 5–7 minutes until softened and the onion is translucent. Stir in the minced garlic and cook for another 30 seconds until fragrant.
Step 3: Add the Lentils, Tomatoes, and Broth
Add the rinsed lentils, diced tomatoes with their juice, broth, cumin, paprika, bay leaves, salt, and pepper. Stir everything together.
Step 4: Simmer
Bring the soup to a boil, then reduce the heat to a gentle simmer. Cover and cook for 30–35 minutes, stirring occasionally, until the lentils are completely tender and the soup has thickened. Check the lentils at 30 minutes — they should be soft all the way through with no bite remaining.
Step 5: Finish with Vinegar
Remove the bay leaves. Stir in the wine vinegar and taste the soup — adjust salt, pepper, or vinegar as needed. The vinegar should lift and brighten the flavor, not make it taste sour. Start with the full amount and add more to taste.
Step 6: Serve
Ladle into bowls and garnish with chopped cilantro or parsley if using. Finish with a drizzle of olive oil or a sprinkle of Parmesan for extra richness. Serve with crusty bread on the side.
Pro Tips
Don’t drain the bacon fat. It’s the foundation of the flavor in this soup. The vegetables sauté in it, the lentils absorb it, and it gives the whole pot a smoky richness you simply can’t replicate with oil alone.
Rinse the lentils. A quick rinse under cold water removes any dust or debris. No soaking needed — lentils cook directly in the broth and reach perfect tenderness in 30–35 minutes.
The vinegar at the end is non-negotiable. It might seem like a small thing, but a splash of wine vinegar before serving transforms the soup from good to great. It cuts through the richness and makes all the other flavors brighter and more defined.
Don’t rush the vegetable sauté. Properly softened onion, carrot, and celery give the soup a sweeter, more developed flavor base. Give them the full 5–7 minutes before adding the lentils.
The soup thickens as it sits. When reheating leftovers, add a splash of broth or water to loosen it back to the right consistency before serving.
Lentil Soup
A smoky, hearty lentil soup built on a bacon base with tender vegetables, warm spices, and a splash of wine vinegar to bring it all together — comfort food at its most satisfying.
Ingredients
- 4 slices bacon, chopped
- 1 tablespoon olive oil
- 1 large onion, diced
- 2 medium carrots, diced
- 2 celery stalks, diced
- 3 cloves garlic, minced
- 1½ cups dry brown or green lentils, rinsed
- 1 can (14.5 oz) diced tomatoes
- 6 cups vegetable or chicken broth
- 1 teaspoon cumin
- 1 teaspoon paprika
- 2–3 bay leaves
- ¾ teaspoon salt
- ½ teaspoon black pepper
- 1½ tablespoons red or white wine vinegar
- Chopped cilantro or parsley for garnish
Instructions
- Cook chopped bacon in olive oil over medium heat until the fat renders and edges begin to crisp.
- Add onion, carrots, and celery. Cook 5–7 minutes until softened. Stir in garlic and cook 30 seconds.
- Add lentils, diced tomatoes, broth, cumin, paprika, bay leaves, salt, and pepper. Stir to combine.
- Bring to a boil, then reduce to a gentle simmer. Cover and cook 30–35 minutes until lentils are tender.
- Remove bay leaves. Stir in wine vinegar. Taste and adjust seasoning.
- Serve with fresh herbs, a drizzle of olive oil, and crusty bread.
Notes
Variations & Customizations
- Make it vegetarian — Skip the bacon and use vegetable broth. Add ½ teaspoon of smoked paprika to compensate for the smoky depth the bacon provides.
- Use red lentils — Red lentils break down more completely and give you a thicker, creamier, almost pureed soup. Cook time reduces to about 20–25 minutes.
- Add spinach or kale — Stir in 2 cups of fresh spinach or chopped kale in the last 5 minutes of cooking for extra greens and color.
- Make it slow cooker — Add everything except the vinegar and garnish to a slow cooker. Cook on low for 6–7 hours or high for 3–4 hours. Stir in the vinegar just before serving.
- Add a Parmesan rind — Drop a piece of Parmesan rind into the pot while the soup simmers for an incredible depth of umami flavor. Remove before serving.
- Make it spicier — Add ¼ teaspoon of red chili flakes with the other spices for a gentle heat that works beautifully with the smoky bacon and earthy lentils.
Storage & Reheating
| Method | Details |
|---|---|
| Fridge | Store in an airtight container for up to 4–5 days. Flavor improves after a day as the spices deepen. |
| Freezer | Freeze in portions for up to 3 months. Thaw overnight in the fridge before reheating. |
| Reheating | Reheat on the stovetop over medium heat or in the microwave. Add a splash of broth or water as the soup thickens significantly when cold. |
Frequently Asked Questions
Can I use red lentils instead of brown or green?
Yes. Red lentils cook faster and break down more completely, giving you a thicker, smoother, almost creamy soup. Reduce the cook time to 20–25 minutes and check for doneness earlier. The flavor is slightly milder but still very good.
Can I make this vegetarian?
Absolutely. Skip the bacon and use vegetable broth. To replace the smoky depth, add ½ teaspoon of smoked paprika and a drizzle of extra olive oil when sautéing the vegetables. Still a deeply flavorful, hearty soup.
Can I make this in a slow cooker?
Yes. Add everything except the vinegar, fresh herbs, and garnish to the slow cooker. Cook on low for 6–7 hours or high for 3–4 hours until the lentils are fully tender. Stir in the wine vinegar just before serving.
Do I need to soak the lentils first?
No. Unlike dried beans, lentils don’t need soaking. Just rinse them under cold water and add them directly to the pot. They’ll be perfectly tender after 30–35 minutes of simmering.
Why is my soup too thick?
Lentil soup naturally thickens as it cooks and even more as it sits and cools. Add a splash of broth or water, stir, and bring back to a simmer until you reach the consistency you want. This is normal and expected, especially with leftovers.
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