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Bowl of whole-grain spaghetti topped with thick red lentil bolognese sauce
DinnerVeganDairy-free

Red Lentil Bolognese

A meaty-tasting, deeply savory bolognese with zero meat. 24g protein, 21g fiber and 8mg iron per serving — your weeknight pasta just got a promotion.

21g Fiber24g Protein8mg Iron267mcg Folate
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Prep15 min
Cook25 min
Calories541 kcal
Serves4

Key nutrients per serving

By The Recipe Seeker Kitchen

Updated 2026-09-17

Ingredients

4 servings

Instructions

4 steps · about 40 minutes total

  1. Build the base

    Heat the oil in a large pot over medium heat. Add onion, carrot and celery with a pinch of salt and cook 8 minutes, stirring, until soft and sweet. Stir in the garlic, tomato paste and oregano and cook 2 minutes until the paste darkens — this caramelization is where the meaty depth comes from.

  2. Simmer the lentils

    Add the lentils, chopped tomatoes and stock. Bring to a boil, then reduce to a gentle simmer. Cook 20–22 minutes, stirring occasionally, until the lentils collapse into a thick, ragged sauce. If it gets too thick, loosen with splashes of water.

  3. Cook the pasta

    While the sauce simmers, cook the spaghetti in well-salted water until al dente. Reserve a cup of pasta water before draining.

  4. Bring it together

    Season the sauce boldly with salt, pepper and chili flakes. Toss the pasta through the sauce with splashes of pasta water until every strand is coated and glossy. Serve with parmesan and basil.

Why this helps

Proof that plants can do protein and iron

A cup of cooked red lentils delivers more iron than many people expect, plus folate and serious fiber. Combined with whole-grain pasta, this bowl covers nearly half your daily iron in a form your body can actually use — especially with the tomatoes’ vitamin C improving absorption in the same meal.

All about FiberAll about ProteinAll about IronAll about Folate

Nutrition facts

per serving · % DV
  • Calories 541 kcal27%
  • Protein 24g48%
  • Total Carbohydrate 94g34%
  • Dietary Fiber 21g75%
  • Total Sugars 9g18%
  • Total Fat 11g14%
  • Sodium 285mg12%

Vitamins & minerals

  • Iron 8.2mg46%
  • Calcium 127mg10%
  • Magnesium 179mg43%
  • Potassium 1078mg23%
  • Vitamin C 23mg26%
  • Folate 267mcg67%
  • Zinc 4.1mg37%

*Percent Daily Values are based on a 2,000 calorie diet. Values are per serving (recipe makes 4).

Nutrition is an estimate calculated from USDA FoodData Central ingredient data and may vary by ingredient brand, preparation, and portion size.

Questions, answered

Does it really taste meaty?
Surprisingly, yes. Red lentils break down into a texture very close to a traditional ragù, and the caramelized tomato paste plus oregano deliver the savory depth. Meat-eaters rarely miss the beef.
Why red lentils and not green?
Red lentils cook in about 20 minutes and melt into the sauce. Green or brown lentils hold their shape and need longer — use them if you prefer a chunkier sauce, adding 10 minutes.
Can I freeze the sauce?
Beautifully. It keeps 3 months frozen and the texture actually improves. Freeze the sauce only, and cook fresh pasta on the day.
How do I add even more iron?
Stir a couple of handfuls of spinach through the hot sauce at the end, and squeeze lemon over each bowl — the vitamin C meaningfully boosts iron absorption.
Is whole-grain pasta necessary?
Not strictly, but it adds about 4g of fiber and extra iron per serving, which is part of why this recipe scores so well. Regular spaghetti works fine.
Can I make it in advance?
Yes — it keeps 4 days refrigerated and reheats perfectly. Like most tomato sauces, day two tastes even better.
What if my sauce is too thin?
Simmer uncovered a few more minutes, or mash a spoonful of lentils against the pot wall and stir them back in as a natural thickener.
Is this kid-friendly?
Very, especially without the chili flakes. The sauce is smooth, mildly sweet from the carrots, and great for picky eaters who need more fiber.
Can I add mushrooms for extra savoriness?
Yes — 200g of finely chopped mushrooms browned with the vegetables adds wonderful umami depth and a little extra B12-friendly nutrition.

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