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Sliced vegan lentil mushroom Wellington in golden puff pastry on a wooden board with thyme and cranberries

Vegan Lentil Mushroom Wellington

A showstopping plant-based Thanksgiving main: a savory lentil, mushroom and walnut filling wrapped in flaky puff pastry and baked until golden.
Prep Time 25 minutes
Cook Time 50 minutes
Rest 10 minutes
Total Time 1 hour 25 minutes
Course Main Course
Cuisine American, British
Servings 8 slices
Calories 330 kcal

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

Check that your puff pastry has no butter, milk or eggs. The filling can be made up to 2 days ahead. For a lighter version, wrap it in 8 layers of phyllo lightly sprayed with olive oil. Nutrition values are estimates.
Keyword lentil wellington, mushroom wellington, vegan thanksgiving main, vegan wellington