Mix butter (room temperature), sugar,salt, flour and turmeric. Add gradually water to make a dough.
Wrap, leave in the fridge for 1hr.
Filling
Blend with a high speed blender onion, mushroom, chestnut and garlic.
Heat a saucepan, then add blended mixture, cookes lentils, thyme and vegetable boulion.
Add flour slurry and fry until soft and dry.
Let the filling coll completely before assembling.
Preheat the oven 365F.
Roll out the pastry between two sheets of parchment paper. Then add filling in the middle and lift the pastry towards the center of the Wellington. Fold the ends, then carefully place the Welligton onto a baking sheet.
Bake 30-35min until golden brown.
Notes
TIP:1.Brush the Welligton before baking with vegan egg wash (1 tbsp maple syrup and 2 tbsp plant-based milk). 2. You can decorate it with remain dough by cutting different shapes with a cookie cutter.