Vegan Lentil Mushroom Wellington (Showstopping Thanksgiving Main)
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Looking for a vegan Thanksgiving main that looks as impressive as a turkey? This vegan lentil mushroom Wellington is it. A savory filling of lentils, mushrooms, walnuts and fresh herbs gets wrapped in flaky puff pastry and baked until golden. It slices cleanly, it’s packed with fiber and plant protein, and even the meat-eaters at the table will want seconds.
🌱 Why This Wellington Is a Healthier Holiday Main
- High in fiber: Lentils, mushrooms and oats give each slice about 6 g of fiber, which keeps you full without the heavy feeling.
- Plant protein: Lentils and walnuts add about 10 g of protein per slice, with no cholesterol.
- Heart-healthy fats: Walnuts bring omega-3 ALA fats instead of the butter and beef of a classic Wellington.
- Make-ahead friendly: You can assemble it the day before and bake it while everything else cooks.
🥧 Vegan Lentil Mushroom Wellington Recipe
Vegan Lentil Mushroom Wellington
Ingredients
Filling
- 1 tbsp olive oil
- 1 medium yellow onion finely diced
- 3 cloves garlic minced
- 1 lb cremini mushrooms 450 g, finely chopped
- 2 tsp fresh thyme leaves or 1 tsp dried
- 1 tsp fresh rosemary finely chopped
- 2 tbsp tomato paste
- 1 tbsp low-sodium soy sauce or coconut aminos
- 2 cups baby spinach chopped
- 1½ cups cooked brown or green lentils one 15-oz can, drained and rinsed
- ½ cup walnuts 50 g, toasted and finely chopped
- ½ cup rolled oats 45 g
- salt and black pepper to taste
Pastry
- 1 sheet vegan puff pastry about 9 oz / 255 g, thawed
- 2 tbsp unsweetened plant milk
- 1 tsp maple syrup
Instructions
- Heat the olive oil in a large skillet over medium heat. Cook the onion for 5 minutes until soft, then add the garlic and cook 1 minute more.
- Add the mushrooms, thyme and rosemary. Cook for 10–12 minutes, stirring often, until the mushrooms release their liquid and the pan is completely dry.
- Stir in the tomato paste and soy sauce for 1 minute, then add the spinach and stir until it wilts. Remove from the heat.
- Add the lentils, walnuts and oats. Mash about half of the mixture with a fork or potato masher so it holds together. Season with salt and pepper and let it cool completely.
- Heat the oven to 400°F (200°C) and put a baking sheet inside to preheat. Roll the puff pastry into a rectangle about 10 x 14 inches on a piece of parchment.
- Shape the cooled filling into a firm log down the middle of the pastry. Fold the sides over, pinch the seam closed and turn it seam-side down. Tuck and seal the ends.
- Whisk the plant milk and maple syrup and brush it over the pastry. Score a few diagonal lines on top with a sharp knife.
- Slide the Wellington on its parchment onto the hot baking sheet. Bake for 30–35 minutes, until deep golden and puffed. Rest for 10 minutes before slicing with a serrated knife.
Notes
🍴 How to Serve It
- With our Easy Vegan Mushroom Gravy poured over each slice.
- Next to Healthy Vegan Mashed Potatoes and roasted green vegetables.
- With cranberry sauce on the side for a sweet-tart contrast.
🧘♀️ Nutrition Tips
Approximate nutrition per slice (1/8 Wellington): 330 calories · 10 g protein · 30 g carbs · 6 g fiber · 19 g fat.
- Check the puff pastry label. Many store brands are accidentally vegan because they use oil instead of butter.
- Cook the mushrooms until dry. If the filling is wet, the pastry gets soggy on the bottom.
- Lighter option: Wrap the filling in 8 sheets of phyllo, each lightly sprayed with olive oil, to cut about 80 calories per slice.
- Nutrition values are estimates.
🛒 Healthy Amazon Finds for This Recipe
- Amazon Basics Silicone Baking Mat 2-Pack: keeps the pastry from sticking and browning too fast on the bottom.
- Cuisinart Mini-Prep Plus Food Processor: chops the mushrooms and walnuts finely in seconds.
- Lodge 12-Inch Cast Iron Skillet: big enough to cook the whole filling and drive off the moisture.
❓ Frequently Asked Questions
Is puff pastry vegan?
Often, yes. Many popular store-bought puff pastry brands use vegetable oils instead of butter. Always check the ingredient list for butter, milk or eggs before you buy.
Can I make vegan Wellington ahead of time?
Yes. Make the filling up to 2 days ahead and keep it in the fridge. You can also wrap the whole Wellington the night before, cover it, and bake it straight from the fridge, adding about 5 minutes.
Can I make it nut-free?
Yes. Replace the walnuts with the same amount of toasted sunflower or pumpkin seeds. The filling will still hold together.
How do I keep the bottom from getting soggy?
Cook the filling until no liquid is left in the pan, let it cool completely before wrapping, and bake the Wellington on a preheated baking sheet.
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🧮 Track it: Use our free Daily Calorie Intake Calculator to find out how many calories you need each day.
✅ Final Thoughts
This vegan lentil mushroom Wellington gives you the wow moment of a holiday roast with the fiber and plant protein of a healthy weeknight meal. Make the filling ahead, bake it on the day, and serve it with gravy. Pin it for your vegan Thanksgiving menu!
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