1. Heat up the oven to 200° C / 390° F (180° C / 355° F fan) and line a baking tray with a piece of baking paper.
2. Cut off the bulbous part of your butternut squash (save it for another use), peel the solid part and cut it in half lengthwise. Brush the two halves with a bit of olive oil on both sides and bake in the pre-heated oven for about 25-35 minutes (depending on size), until almost cooked all the way through. Let the two halves cool down completely.
3. Heat up 2 tbsp of oil in a heavy bottomed pan. Add finely diced onion and fry on a low-medium heat until gently caramelised. Add chopped garlic, stir-fry until softened and fragrant.
4. Add chopped herbs and stir-fry for about another minute.
5. Add in chopped spinach, cranberries, olives and 50 g / ½ cup of pecans and, if the pan is too dry, perhaps a splash of water (or veggie stock or vegan wine). Allow the spinach to wilt into the pan. Season with salt, pepper and chilli.
6. Once the spinach has wilted, allow all the water to cook out completely. Cool the mixture off. Once cool, stir 45 g / ½ cup breadcrumbs through the mixture so that they soak up any excess moisture.

BALSAMIC REDUCTION

1. Place balsamic vinegar and sugar in a small pot. Bring it to the boil gently and allow it to simmer for 20 minutes or so until the liquid reduces by about ½ and becomes thick. Beware that it will become even thicker once it cools so don’t let it reduce too much. If you do, add a splash of water to bring it back.

ASSEMBLY

1. Place the sheet of pastry in front of you so that the longer edge runs parallel to the work bench (I used a Jus Roll puff pastry sheet, which measures 23 cm / 9″ by 35 cm / 13.5″ cm). You will place your filling in the horizontal middle of the pastry. The width of the area designated for the filling is determined by the width of your butternut squash (mine was 8 cm / 3″ wide).
2. Sprinkle the remainder of the breadcrumbs over the area where the filling will be placed making sure you leave about 2 cm / 1 ” margin at the top an bottom. The breadcrumbs will prevent the bottom of the Wellington from getting soggy.
3. Next pile the spinach filling over the breadcrumbs, into a well compressed, rectangular parcel (you may end up with some leftover mixture).
4. Place the two halves of the butternut squash on top of the spinach parcel so that the cut ends touch each other in the centre. Brush the cut ends with a bit of balsamic glaze to ‘glue’ the two pieces together.
5. Glaze the top and sides of the butternut squash halves with balsamic glaze and then sprinkle them with the rest of the chopped pecans – the nuts will create a barrier stopping the pastry from getting soggy.
6. Once the filling is in place, make a series of 2.5 cm / 1″ incisions in the pastry on both sides of the stack to be able to create a braid at the top. You can make the incisions perpendicular to the log (like I did in mine) or at a slight diagonal angle, it’s up to you.
7. Fold both end (top and bottom) flaps up, like you would wrap a present and then braid the strips over the top of the filling, alternating sides. If you end up with big gaps at either of the ends, patch them up with leftover pastry. This method works great here as it prevents slack in the pastry and allows for tight wrapping despite the slightly irregular shape of the filling. The tiny gaps in between the braids allow the steam to escape and prevent the Wellington from bursting while in the oven.
8. Brush the pastry with soy milk.
9. Bake for about 50 minutes, until the pastry is beautifully puffed and golden.
10. Serve with your favourite side dishes (like hasselback potatoes, for example) drizzled with the balsamic reduction you made earlier.