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Red Lentil Walnut Ragu

Close-up of red lentil walnut ragu spooned over spaghetti, showing the thick tomato sauce and chopped parsley garnish.
Thick, savoury red lentil walnut ragu with rosemary and thyme. High-protein, hearty, and perfect for pasta, polenta, or baked potatoes.
Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Course Main Course
Cuisine International
Servings 4
Calories 315 kcal

Ingredients  

  • 1 tbsp olive oil
  • 1 medium onion very finely diced
  • 2 medium carrots very finely diced
  • 2 garlic cloves minced
  • 150 g red lentils dry, rinsed
  • 400 g chopped tomatoes
  • 1 tbsp tomato paste
  • 500 ml vegetable stock
  • 60 g walnuts very finely chopped
  • 1 tsp dried rosemary or 1 tbsp fresh, chopped
  • 1 tsp dried thyme or 1 tbsp fresh thyme leaves
  • 1 tsp soy sauce or tamari
  • 2 tsp smoked paprika optional
  • Salt to taste
  • Black pepper to taste

Instructions 

  • Heat olive oil in a wide, deep sauté pan over medium heat. Add onion and carrots with a pinch of salt. Cook 8–10 minutes until soft, stirring occasionally.
  • Add garlic, rosemary, thyme and smoked paprika (if using). Cook 30–45 seconds until fragrant.
  • Stir in lentils, tomato paste, chopped tomatoes, stock and soy/tamari. Bring to a gentle simmer.
  • Simmer uncovered for 20–25 minutes, stirring occasionally, until lentils are very soft and the sauce is thick. Add a splash of water if needed.
  • Stir in finely chopped walnuts and cook 2–3 minutes more.
  • Season with salt, black pepper and balsamic (if using). Serve.

Notes

Swaps that work

  • No walnuts: Use 40–60 g toasted sunflower seeds, finely chopped, or stir in 1–2 tbsp tahini at the end for richness.
  • No soy/tamari: Use 1 tsp vegetarian Worcestershire, or a small pinch of marmite/yeast extract stirred into the stock.

Diet note

The base ragu is naturally vegan and dairy-free. It’s gluten-free if you use tamari (and serve it with gluten-free pasta/polenta/potatoes).

Storage

Refrigerate up to 4 days. Freeze up to 3 months. Thaw overnight, then reheat gently with a splash of water/stock to loosen.
Keyword lentil walnut ragu, red lentil ragu pasta, red lentil walnut ragu, vegan lentil ragu, vegetarian lentil ragu