This vegan mushroom wellington makes an impressive and delicious centerpiece to any festive meal. It’s got a flavorsome mushroom and nut filling, whole roasted portobellos, cranberry sauce and is covered by beautifully braided puff pastry.

A freshly cut slice of the wellington. The cut was made right through one of the large portobello mushrooms inside, so the cross section shows the shape of the whole mushroom embedded in the filling and surrounded by flaky puff pastry.

Wellington is a favorite festive dish - whether you are celebrating Christmas, Thanksgiving or another a special occasion!

We took inspiration from a couple of other vegan wellingtons when developing this recipe. Most of the mushroom wellington recipes we found use spinach as a main ingredient. We tried and found that using spinach in the wellington made it not as rich tasting as we wanted.

So we came up with this filling which is full of savory mushroom flavour and the richness of nuts.

We also took inspiration for the braided top from this vegan beetroot wellington. It might look fancy and difficult, but it’s surprisingly easy when you know how to do it. Our step by step pictures will help you!

A slice of wellington revealing the cross section of a whole portobello mushroom inside, plated up with some vegetables, gravy and cranberry sauce.

Ingredient tips

Here’s what you’ll need to make this vegan mushroom wellington:

Vegan puff pastry - We recommend a block for best results. If you only have prerolled sheets which are smaller, you could join them together with the seam underneath the filling, or have less overlap on the top. In UK most of the Jus-Rol brand is vegan and in the US Pepperidge Farm is too.
Portobello mushrooms - These get roasted whole and make a nice ‘meaty’ contrast to the rest of the filling. Chose mushrooms of a similar size. You can fit three or four whole portobellos in the wellington depending on how big they are.
Mushrooms - For the filling, you can use white or chestnut mushrooms, or other more gourmet or wild mushrooms if you fancy.
Olive oil, onion & garlic
Mixed nuts - We’ve tried out a variety of different kinds of nuts such as cashews, walnuts, pecans, hazelnuts, almonds and peanuts. You’ll want the raw, unsalted kind. We usually use a combination of three different types of nuts and buy organic nuts in bulk.
Balsamic vinegar - Gives a slight sweetness and depth of flavor to the filling.
Soy sauce - Seasons the mushrooms and brings out more umami. We recommend an organic soy sauce or tamari.
Dried herbs - We use herbs de provence, or a mix of rosemary, thyme and sage. If substituting fresh herbs, use three times as much.
Vegetable bouillon for a bit of seasoning and depth.
Chia seeds - The gelling properties of chia seeds helps to absorb liquid and hold the filling together so the wellington slices well.
Cranberry sauce - We recommend our easy homemade cranberry sauce recipe, but you can use a shop bought version too.
Soy milk and maple syrup make the glaze for the pastry.
And optional sesame seeds are the final touch on top.

The ingredients for the mushroom wellington all laid out on a white surface.

Step by step

Making the filling

A collage showing roasting portobellos, toasted nuts and frying onion and mushrooms.

Step 1 - Rub the portobello mushrooms in oil, then place face down on a baking tray and roast for 15 minutes at 180C. Excess liquid can be kept set aside and used in gravy.

Step 2 - In a food processor, pulse the nuts until finely chopped and then spread on a baking tray to toast for 5-10 minutes in the oven, until starting to brown.

Step 3 - Fry the finely chopped onion in the olive oil until translucent.

Step 4 - Add the finely chopped mushrooms and cook until they have shrunk down and released their liquid.

Step 5 - Add the garlic & herbs and continue cooking for another minute.

Step 6 - Deglaze the pan by adding the balsamic vinegar, soy sauce and bouillon powder.

Step 7 - Finally add the toasted nuts and chia seeds and stir the mix until combined.

Step 8 - Optional, if the mixture seems too crumbly / dry to hold together add a splash of the portobello mushroom liquid or water.

Assembling the wellington

Puf pastry is rolled out on a wooden board using a rolling pin.

Step 1 - Roll out your puff pastry to a 14 inch / 35cm square and transfer to a piece of baking parchment or silicone liner.

some mushroom filling is placed on the puff pastry sheet.

Step 2 - With half the filling, make a line down the center third of the pastry, leaving an inch uncovered at each end.

Large roasted mushrooms are placed in a line on top of the first layer of filling.

Step 3 - Place the roasted portobellos evenly spaced on top of the filling. Lightly press them down.

The filling is shaped into a smooth log down the middle of the puff pastry.

Step 4 - Add the remaining filling in the spaces around and on top of the mushrooms to make an even log shape.

The mushroom filling is topped with a few spoonfuls of cranberry sauce for a final touch of flavour.

Step 5 - Place small spoonfuls of the cranberry sauce over the top of the mushroom mix.

The puff pastry is cut to shape before it can be braided. Two flaps are created cover both ends.

Step 6 - Cut four notches in the pastry at the corners of the filling.

Step 7 - Trim four triangles at each corner so you end up with two flaps at the end of the filling.

The wellington just before it is braided. The puff pastry has been cut into diagonal strips on both sides of a filling lined up in the center.

Step 8 - From the edges of the filling, cut an equal number strips of pastry about 2.5cm or ¾ inch wide on a slight diagonal towards you.

Step 9 - Fold up the end flaps, then working alternately from side to side, fold over and cross the pastry strips over the filling. Pinch the end of the final strips to the side of the pastry to seal.

The puff pastry surface of the log is brushed with a combination of soy milk and maple syrup.

Step 10 - Brush with soy milk and maple syrup mixture, then sprinkle with optional sesame seeds.

Substitutions and variations

For a gluten free mushroom wellington, you can buy gluten free puff pastry and use gluten free tamari sauce instead of the soy sauce.

If you want to try a nut free alternative, you could experiment with using a mix of sunflower or pumpkin seeds instead of the nuts.

If you don’t want to do the braid on top, you can put the filling to one side and fold over and seal it. Just lightly score the pastry on the top to help it puff up.

And as an alternative to cranberry sauce, you could just stir some dried cranberries into the filling. They won’t have the same spicy tartness of the sauce, but they’ll add a note of sweetness which is nice.

A golden brown braided mushroom wellington on a baking sheet, surrounded by some twigs of fresh herbs, a small dish of cranberry sauce and a gravy boat.

Serving and storage

To transfer to a serving board, we lift it by holding baking paper and then slide it off with the help of a spatula.

For easy cutting, we find a serrated bread knife works well to slice the wellington.

This vegan mushroom wellington goes great with:

Roasted potatoes
These maple and mustard glazed carrots
Some brussels sprouts or other greens
More cranberry sauce
And plenty of homemade vegan gravy

Leftovers can be stored in an airtight container in the fridge for up to 3 days. It’s best reheated in the oven, rather than a microwave, so the pastry stays crisp.

Mushroom wellington as the centerpiece of a festive roast dinner.

You might wanna check out these other tasty vegan Christmas recipes:

Our really Easy Nut Roast

These incredibly delicious Vanillekipferl Crescent Cookies

And our fan favourite Mushroom Pate

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