Lentil Bolognese Spaghetti

Category: Satisfying Main Dishes for Every Occasion

This comforting dish brings together tender lentils, aromatic vegetables, and tangy tomatoes to create a robust Italian-inspired sauce. Gently sautéed onion, carrot, and celery provide a savory base enhanced by garlic and dried herbs. The addition of soy sauce and balsamic vinegar deepens the umami, while crushed tomatoes and tomato paste enrich the sauce with classic Mediterranean flavor. Lentils become hearty and satisfying after a slow simmer in vegetable broth. Tossed with perfectly cooked spaghetti and finished with fresh herbs and nutty vegan cheese, this plant-based meal offers cozy warmth and layers of flavor in every bite.

A woman wearing a chef's hat and apron.
Created By Sarah
Last updated on Sun, 08 Jun 2025 12:31:38 GMT
A bowl of spaghetti with sauce and a green leaf on top. Save
A bowl of spaghetti with sauce and a green leaf on top. | sarahmeal.com

Lentil Bolognese Spaghetti is the answer to cozy, soul-warming dinners that fill your kitchen with rich aromas and leave everyone dipping back for seconds. This dish delivers the hearty depth of classic Bolognese using wholesome lentils instead of meat, creating a recipe that is comforting, nourishing, and wonderfully satisfying.

When I first swapped lentils for meat in this sauce, even my most devoted carnivores were completely wowed. Now it is a staple I lean on when I want a meal that brings everyone together and makes weeknights special.

Ingredients

  • Olive oil: Two tablespoons Extra virgin olive oil sets a flavorful foundation for the sauce and helps the vegetables caramelize gently
  • Yellow onion: One large Finely chop it for sweetness and to build the base of flavor pick one that feels heavy and has tight skin
  • Carrots: Two medium Peel and dice for a subtle sweetness and color Fresher carrots give better texture
  • Celery stalks: Two medium Finely diced for mild savory notes and extra body Look for crisp green stalks
  • Garlic: Four cloves Mince for a bold kick Plump cloves are best for aroma
  • Brown or green lentils: One and a half cups Rinse them well They hold shape better than red lentils and offer the meaty bite of the sauce
  • Vegetable broth: Four cups Low sodium keeps flavors balanced Choose a broth without overpowering herbs
  • Crushed tomatoes: One can Look for a high quality 28 ounces can as the flavor shines through
  • Tomato paste: Two tablespoons It gives deep rich tomato intensity Opt for double concentrated paste if possible
  • Dried oregano: One teaspoon Classic for that distinctly Italian flavor Rub it in your palm to release aroma
  • Dried basil: One teaspoon Brings brightness and rounds out the flavor profile
  • Bay leaf: One Adds subtle depth Remove before serving Always use a whole unbroken leaf
  • Red pepper flakes: A quarter to half teaspoon optional Add gentle heat according to personal taste Pick a fresh bright colored batch
  • Soy sauce or tamari: One tablespoon For umami richness Tamari makes this dish gluten free
  • Balsamic vinegar: One teaspoon Finishes with tang and extra complexity Use a thick syrupy one for best flavor
  • Salt: Start with half a teaspoon and adjust Sea salt enhances all components
  • Black pepper: To taste Fresh ground pepper wakes up the whole dish
  • Spaghetti: One pound Pick classic or any pasta shape you prefer Opt for bronze cut pasta for better sauce cling
  • Fresh parsley or basil: Chopped for garnish Use right before serving for aroma and color
  • Nutritional yeast or vegan parmesan: Optional Sprinkle for a cheesy savory touch Choose flakes with a golden color

Step-by-Step Instructions

Prepare the Aromatics
Heat olive oil in a large heavy pot over medium heat until shimmering Add chopped onion and let it cook gently for about five to seven minutes Stir occasionally The onion should become translucent and sweet but not browned Add the diced carrots and celery Continue cooking for eight to ten more minutes This slow process builds a rich base as the veggies soften and sweeten
Add Garlic and Spices
Stir in minced garlic Cook just one minute It should become aromatic but not dark Add dried oregano dried basil and optional red pepper flakes Stir constantly for half a minute Toasting these blooms their flavor and releases essential oils
Incorporate Tomato Paste and Umami Boosters
Add tomato paste Stir and let cook for two to three minutes It should darken slightly and smell deeply savory Add soy sauce or tamari This gives an extra kick of savoriness and makes the sauce more luscious
Add Lentils Tomatoes and Broth
Add rinsed lentils to the pot Stir so they are covered in all the vegetable flavors Pour in crushed tomatoes and vegetable broth Make sure to scrape up any bits stuck to the bottom Add a whole bay leaf so it infuses slowly
Simmer the Sauce
Bring everything to a gentle simmer Lower heat cover the pot and let cook for forty to fifty minutes Stir every ten to fifteen minutes You want the lentils to be tender but still have a bit of bite If the sauce thickens too much add more broth or water by the quarter cup as needed
Cook the Spaghetti
While the sauce simmers bring a big pot of well salted water to a boil Cook spaghetti according to package until al dente Reserve one cup of pasta water before draining This helps adjust sauce consistency later
Finish the Sauce and Season
Take out the bay leaf from the sauce Stir in a teaspoon of balsamic vinegar Taste and add salt and pepper as needed If the sauce is too thick stir in a splash of pasta water until perfect
Combine and Serve
Toss drained pasta directly in the sauce or serve sauce over individual plates of spaghetti Sprinkle plenty of chopped fresh parsley or basil and add nutritional yeast or vegan parmesan if you like
A bowl of spaghetti with a green leaf on top. Save
A bowl of spaghetti with a green leaf on top. | sarahmeal.com

Bay leaf may seem small but it rounds out all the savory notes in this sauce I never skip it because it is the secret to depth just like my mom always used in Sunday gravy This recipe is always a hit around my table especially on chilly nights when we all crave that big bowl of comfort

Storage Tips

Let leftover Lentil Bolognese cool before sealing in airtight containers It keeps well in the fridge for up to four days and can be frozen for up to two months Thaw in the refrigerator and gently reheat on the stove Add a splash of broth or water if needed

Ingredient Substitutions

Feel free to use green lentils if you cannot find brown Red lentils will get too mushy but French lentils work well Gluten free pasta or even spiralized zucchini noodles suit different dietary needs If you do not have balsamic vinegar a touch of red wine vinegar is a good backup

A bowl of spaghetti with sauce and a sprig of parsley on top. Save
A bowl of spaghetti with sauce and a sprig of parsley on top. | sarahmeal.com

Serving Suggestions

Serve with toasted garlic bread and a crisp green salad for a balanced dinner Kids love it with a sprinkle of vegan cheese or a handful of pine nuts If you want extra veggies stir in sautéed mushrooms or diced bell peppers with the mirepoix

Cultural History

This dish is inspired by the traditional Italian Bolognese but replaces meat with protein rich lentils While not classic it captures the slow simmered depth and warmth of northern Italy Many Italian families have their own unique Bolognese traditions and this plant based twist honors that spirit

Common Recipe Questions

→ Can I use red lentils for this dish?

It's best to use brown or green lentils. Red lentils tend to break down and become mushy, which won't achieve the desired hearty texture.

→ How can I make the sauce thicker?

Allow the sauce to simmer uncovered to reduce excess liquid, or add a bit less vegetable broth to start. Lentils will also help thicken the sauce as they cook.

→ Is it possible to use gluten-free pasta?

Yes, you can substitute regular spaghetti with your favorite gluten-free pasta variety. Cook according to package directions for best texture.

→ What herbs work well as a garnish?

Freshly chopped parsley or basil add brightness and a burst of color to the finished dish.

→ Can this meal be prepared ahead of time?

The sauce can be made a day in advance and refrigerated. Cook pasta fresh for serving and combine before eating for best texture.

→ Is there a way to add a cheesy flavor without dairy?

Sprinkle nutritional yeast or use vegan Parmesan for a savory, cheesy finish without using dairy products.

Lentil Bolognese Spaghetti

Lentils, tomatoes, and vegetables simmered for a rich, savory sauce served over perfectly cooked spaghetti.

Preparation Time
20 minutes
Cook Time
65 minutes
Total Duration
85 minutes
Created By: Sarah

Recipe Category: Main Dishes

Level of Difficulty: Moderate

Cuisine Style: Italian

Servings Yield: Serves 4–6 persons

Diet Preferences: Vegan-Friendly, Vegetarian-Friendly, Dairy-Free Option

What You'll Need

→ Sauce Base

Ingredient 01 2 tablespoons extra virgin olive oil
Ingredient 02 1 large yellow onion, finely chopped
Ingredient 03 2 medium carrots, peeled and finely diced
Ingredient 04 2 medium celery stalks, finely diced
Ingredient 05 4 cloves garlic, minced

→ Main Filling

Ingredient 06 1.5 cups brown or green lentils, rinsed
Ingredient 07 4 cups low-sodium vegetable broth
Ingredient 08 1 can (794g) crushed tomatoes
Ingredient 09 2 tablespoons tomato paste

→ Herbs & Seasoning

Ingredient 10 1 teaspoon dried oregano
Ingredient 11 1 teaspoon dried basil
Ingredient 12 1 bay leaf
Ingredient 13 0.25 to 0.5 teaspoon red pepper flakes (optional)
Ingredient 14 1 tablespoon soy sauce or tamari
Ingredient 15 1 teaspoon balsamic vinegar
Ingredient 16 Salt, to taste
Ingredient 17 Black pepper, to taste

→ Pasta & Finale

Ingredient 18 500g dried spaghetti or preferred pasta shape
Ingredient 19 Fresh parsley or basil, chopped, for garnish
Ingredient 20 Nutritional yeast or vegan parmesan, for serving (optional)

How to Make It

Instruction 01

Heat olive oil in a large heavy-bottomed pot over medium heat. Add chopped onion and sauté for 5–7 minutes until softened and translucent. Add carrots and celery, then continue cooking for 8–10 minutes until all vegetables are soft and beginning to caramelize.

Instruction 02

Stir in minced garlic and cook for 1 minute until fragrant. Add dried oregano, dried basil, and red pepper flakes if using, then cook for another 30 seconds to release their fragrance.

Instruction 03

Add tomato paste and cook, stirring frequently, for 2–3 minutes until slightly darkened. Pour in soy sauce or tamari, stirring well to blend.

Instruction 04

Add rinsed lentils to the pot, stirring to coat. Pour in crushed tomatoes and vegetable broth, then stir thoroughly, making sure nothing sticks to the base. Add bay leaf.

Instruction 05

Bring mixture to a gentle simmer. Reduce heat to low, cover, and cook for 40–50 minutes, stirring every 10–15 minutes, until the lentils are tender yet intact. Add more broth or water in 60 ml increments if the sauce thickens too much.

Instruction 06

While the sauce cooks, bring a large pot of well-salted water to a boil. Cook the spaghetti according to package instructions until al dente. Reserve 250 ml pasta cooking water prior to draining.

Instruction 07

Remove the bay leaf. Stir in balsamic vinegar. Taste and adjust seasoning with salt and freshly ground black pepper. If a thinner sauce is desired, stir in reserved pasta water as needed.

Instruction 08

Either toss the drained spaghetti with the sauce in the pot or serve sauce over individual plates of pasta. Garnish with chopped parsley or basil and top with nutritional yeast or vegan parmesan if desired.

Additional Tips

  1. Long, gentle sautéing of the mirepoix develops depth and complexity in the finished sauce.
  2. Use tamari instead of soy sauce to keep the dish gluten-free.
  3. Adjust sauce thickness with reserved pasta water for optimal cling to noodles.

Essential Tools

  • Large heavy-bottomed pot or Dutch oven
  • Large saucepan for boiling pasta
  • Wooden spoon or spatula
  • Chef’s knife
  • Chopping board
  • Colander

Allergy Details

Always review ingredient labels for allergens, and consult a professional if you're unsure.
  • Contains soy (if using regular soy sauce); use gluten-free tamari for celiac needs.
  • May contain gluten if pasta is not gluten-free.

Nutritional Breakdown (per serving)

These nutritional details are for informational purposes and shouldn't replace medical advice.
  • Calories: 550
  • Fat Content: ~
  • Carbohydrate Content: ~
  • Protein Content: ~