Vegan Stamppot with Lentils and Mushrooms (Dutch Potato Mash)

Dutch stamppot turns mashed potatoes into a full, hearty meal by folding in vegetables or savoury additions and serving it hot in generous bowls. This vegan version keeps the familiar comfort of a creamy potato mash while using green lentils for substance and browned mushrooms for deep, earthy flavour. Dijon mustard sharpens the stock-enriched mash without overpowering it, and spring onions bring a fresh finish against the richness of olive oil and potatoes. It is practical weeknight cooking with enough depth to feel satisfying on its own, especially when the mushrooms are well coloured and the lentils stay tender rather than soft.
Cuisine style Dutch home cooking
Flavor profile Savoury • Earthy • Tangy
Techniques Boiling • Sautéing • Mashing
Key equipment Large pot • Large frying pan • Potato masher
Time commitment Under 1 hour
Cooking style Meal prep friendly

Why this recipe works

  • Hearty and satisfying: Floury potatoes create the soft, filling base expected from stamppot, while lentils add substance without needing meat.
  • Deep savoury flavour: Browning the mushrooms before folding them into the mash brings earthy depth and balances the sharpness of the Dijon mustard.
  • Creamy without dairy: Hot vegetable stock and olive oil loosen the mash and give it a smooth, rounded finish while keeping the recipe fully vegan.

Get the most out of this recipe

Authenticity notes

  • Dutch comfort food: Stamppot is a Dutch mashed potato dish typically served as a simple, filling meal, often with vegetables mixed directly into the mash.
  • Vegan adaptation: Lentils and browned mushrooms replace the more traditional meat accompaniments, keeping the dish hearty while adding plant-based savouriness.

Ingredient notes

  • Choose floury potatoes: Russet or another floury potato gives the mash a lighter, fluffier texture than waxy varieties.
  • Drain the lentils well: Excess cooking water can loosen the mash too much, so let the lentils drain thoroughly before folding them through.
  • Mustard matters: Dijon gives a smooth tang; whole-grain mustard can be used for a gentler flavour and more texture.

Texture tips

  • Steam-dry the potatoes: Returning the drained potatoes to the hot pot briefly helps moisture evaporate, giving the mash a lighter finish.
  • Add stock gradually if needed: The mash should be creamy rather than loose, so adjust the hot stock carefully depending on the potatoes.

Make-ahead tips

  • Good for meal prep: The finished stamppot keeps well in the fridge and can be portioned for easy lunches or dinners.
  • Reheat gently: Warm in a saucepan over a low heat with a splash of vegetable stock, stirring until piping hot and creamy again.
  • Freezes well: Freeze in portions, then defrost overnight in the fridge before reheating gently.

Equipment you'll need

Ingredients
Instructions
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  1. Peel the potatoes and cut into even chunks. Rinse the lentils well. Finely chop the onion, slice the mushrooms, and thinly slice the spring onions.
  2. Put the potatoes in a large pot, cover with cold water, and add 1 tsp of the salt. Bring to the boil, then simmer for 15 to 18 minutes until very tender. Drain well in a colander and return the potatoes to the hot pot to steam-dry for 1 minute.
  3. Meanwhile, cook the lentils in a separate pot of simmering water for 18 to 22 minutes until tender but not mushy. Drain well and set aside. If they are done early, cover to keep warm.
  4. Heat 2 tbsp of the olive oil in a large frying pan over a medium-high heat. Add the onion with the remaining 1 tsp salt and cook for 4 to 5 minutes until softened. Add the mushrooms and cook for 6 to 8 minutes until their liquid has evaporated and they are well browned.
  5. Mash the potatoes until smooth, then stir in the hot vegetable stock, Dijon mustard, black pepper, and the remaining 1 tbsp olive oil. Fold in the lentils and the mushroom mixture, then cook over a low heat for 2 to 3 minutes, stirring, until piping hot. Stir through most of the spring onion, reserving a little to finish.
  6. Taste and adjust with a little more salt or pepper if needed. Spoon into bowls and scatter over the reserved spring onion. Serve straight away while hot and creamy.

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Recipe notes

Tips

  • For the best texture, let the drained potatoes steam-dry in the hot pot before mashing so the stamppot stays fluffy rather than watery.
  • Brown the mushrooms until their moisture has cooked off and they take on colour; this is where most of the savoury depth comes from.
  • If serving anyone who is sensitive to mustard, keep the Dijon mustard to the side and stir it into individual portions instead.

Substitutions

  • Replace Dijon mustard with whole-grain mustard for a milder heat and a coarser texture.
  • Replace mushrooms with oyster mushrooms for a meatier bite.

Storage

  • Refrigerate up to 3 days
  • Cool quickly, then refrigerate in a sealed container for up to 3 days. Freeze in portions for up to 2 months; defrost overnight in the fridge and reheat in a saucepan over a low heat with a splash of vegetable stock, stirring until piping hot.

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Vegan Stamppot with Lentils and Mushrooms (Dutch Potato Mash)
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Recipe overview

  • Servings: 3 servings
  • Total time: 45min (25min active)
  • Difficulty: Easy
  • Cuisine: Dutch
  • Allergens:
    Mustard
Beginner friendly Freezer friendly Kid friendly

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