Mushroom and Chestnut Pâté en Croûte for Christmas

Imperial November 14, 2026November 14, 2026

Quick Recipe Version (TL;DR)

Mushroom and Chestnut Pâté en Croûte is a festive vegetarian centerpiece with a buttery pastry shell and a rich, sliceable filling of mushrooms, roasted chestnuts, lentils, shallots, and fresh herbs.

Yield: 10 generous buffet portions, approximately 2.5 cm thick
Prep Time: 45 minutes
Cook Time: 1 hour 45 minutes
Total Time: 3 hours 45 minutes, including filling cooling, assembled pastry chilling, and a 30-minute rest; the initial pastry chilling overlaps with filling preparation

Quick Ingredients

Pastry: 400 g all-purpose flour, 200 g cold unsalted butter, 6 g fine sea salt, 1 large egg, and 80 ml ice-cold water
Mushroom base: 750 g mixed cultivated specialty mushrooms, 30 g unsalted butter, 15 ml olive oil, 150 g shallots, and 12 g garlic
Filling: 250 g peeled roasted chestnuts, 250 g cooked and thoroughly drained green or brown lentils, 50 g fine dry breadcrumbs, and 2 large eggs
Seasoning: 60 ml dry white wine, 15 ml soy sauce, 15 g Dijon mustard, 15 g flat-leaf parsley, 2 g fresh thyme leaves, 1 g fresh sage leaves, 3 g fine sea salt, and 1 g ground black pepper
Egg wash: 1 large egg beaten with 15 ml milk

Do This

1. Make the pastry with the flour, butter, salt, egg, and water. Divide into two-thirds and one-third portions, flatten, wrap, and refrigerate for at least 1 hour.
2. Finely chop the mushrooms. Cook in two batches with the olive oil and 20 g butter for 11 minutes per batch, until browned and dry. Transfer to a bowl.
3. Cook the shallots in the remaining 10 g butter for 8 minutes. Add garlic for 1 minute, then wine for 4 minutes. Combine with the mushrooms and spread on a tray to cool for 25 minutes.
4. Mix the cooled mushroom mixture with chopped chestnuts, lentils, breadcrumbs, 2 eggs, soy sauce, mustard, herbs, salt, and pepper.
5. Line a 25 × 13 × 8 cm loaf tin with parchment and the larger pastry portion. Pack in the filling, add the pastry lid, seal, and cut 3 steam vents. Chill for 20 minutes, then brush with egg wash.
6. Bake at 200°C conventional / 180°C fan / 400°F for 20 minutes, then at 180°C conventional / 160°C fan / 350°F for 50 minutes, until golden and the center reaches 74°C / 165°F.
7. Rest in the tin for 30 minutes before lifting out and slicing. For especially neat buffet slices, refrigerate until thoroughly chilled before cutting.

Why You’ll Love This Recipe

A proper Christmas centerpiece: A glossy, golden pastry case makes this feel every bit as special as a traditional festive roast.
Rich, savory flavor: Deeply browned mushrooms, sweet chestnuts, thyme, and shallots create a satisfying filling without meat.
Designed for elegant slices: Lentils, eggs, and breadcrumbs help the filling hold together while keeping its pleasantly coarse texture.
Excellent for entertaining: Serve it warm, chilled, or briefly brought to room temperature, with cranberry relish, mustard, or a crisp winter salad.

Grocery List

Produce: 750 g mixed mushrooms, 150 g shallots, 12 g garlic, 15 g flat-leaf parsley, 2 g thyme leaves, and 1 g sage leaves
Dairy: 230 g unsalted butter and 15 ml milk
Eggs: 4 large eggs
Pantry: 400 g all-purpose flour, 250 g peeled roasted chestnuts, 250 g cooked green or brown lentils, 50 g fine dry breadcrumbs, 15 ml olive oil, 60 ml dry white wine, 15 ml soy sauce, 15 g Dijon mustard, 9 g fine sea salt, and 1 g ground black pepper
Baking supplies: Baking parchment and a 25 × 13 × 8 cm metal loaf or pâté tin, approximately 2.5 liters in capacity

Full Ingredients

For the Buttery Pastry

400 g all-purpose flour, plus a light dusting for rolling
200 g cold unsalted butter, cut into 1 cm cubes
6 g fine sea salt, approximately 1 teaspoon
1 large egg, approximately 50 g without the shell
80 ml ice-cold water

For the Mushroom and Chestnut Filling

750 g mixed mushrooms, cleaned, trimmed, and finely chopped into approximately 5 mm pieces; use 350 g cremini, 250 g oyster mushrooms, and 150 g stemmed shiitake
30 g unsalted butter, divided into 20 g and 10 g portions
15 ml olive oil, approximately 1 tablespoon
150 g peeled shallots, finely diced
12 g garlic, approximately 4 medium cloves, finely minced
60 ml dry white wine
250 g peeled roasted chestnuts, roughly chopped, with some pieces left approximately 1 cm across
250 g cooked green or brown lentils, rinsed if canned, thoroughly drained, and patted dry
50 g fine dry breadcrumbs
2 large eggs, lightly beaten
15 ml soy sauce, approximately 1 tablespoon
15 g Dijon mustard, approximately 1 tablespoon
15 g flat-leaf parsley, finely chopped
2 g fresh thyme leaves, approximately 2 teaspoons
1 g fresh sage leaves, finely chopped, approximately 1 teaspoon
3 g fine sea salt, approximately ½ teaspoon
1 g ground black pepper, approximately ½ teaspoon

For the Egg Wash

1 large egg
15 ml milk, approximately 1 tablespoon

Optional, for Serving

150 g cranberry relish, served separately
50 g wholegrain mustard, served separately
4 small thyme sprigs, placed beside the finished pâté

Mushroom and Chestnut Pâté en Croûte for Christmas – Closeup

Step-by-Step Instructions

Step 1: Make and chill the pastry

Combine the flour and 6 g salt in a large bowl. Add the 200 g cold butter and rub it into the flour with your fingertips until the mixture resembles coarse breadcrumbs, with a few pea-sized butter pieces remaining. Alternatively, pulse briefly in a food processor.

Beat 1 egg with the 80 ml ice-cold water. Add it to the flour mixture and stir just until the dough forms moist clumps. Press together gently without kneading. Divide into two portions, one approximately twice the size of the other. Flatten each into a rectangle, wrap, and refrigerate for at least 1 hour while you prepare and cool the filling.

Step 2: Brown the mushrooms thoroughly

Use a wide, heavy frying pan, approximately 30 cm across. Heat half the olive oil and 10 g butter over medium-high heat. Add half the chopped mushrooms and cook for 11 minutes, stirring occasionally, until their released liquid has evaporated and the mushrooms are beginning to brown. Transfer to a large bowl.

Repeat with the remaining olive oil, another 10 g butter, and the remaining mushrooms for 11 minutes. Add them to the bowl. The mushrooms should look concentrated and fairly dry, not wet or soupy. If necessary, cook a little longer to evaporate any remaining liquid; this is the most important safeguard against soggy pastry.

Step 3: Cook the shallots and cool the filling base

Reduce the heat to medium. Melt the remaining 10 g butter in the same pan and add the shallots. Cook for 8 minutes, stirring regularly, until soft and lightly golden. Add the garlic and cook for 1 minute.

Pour in the white wine, scrape up the browned bits, and simmer for 4 minutes, until the pan is almost dry. Stir into the mushrooms, then spread the mixture over a large shallow tray. Cool for 25 minutes, stirring once halfway through. It should no longer feel warm before you add the eggs or put it into the pastry.

Step 4: Mix the chestnut and lentil filling

Place the lentils in a large bowl and lightly mash about one-third of them with a fork. Add the cooled mushroom mixture, chopped chestnuts, breadcrumbs, 2 beaten eggs, soy sauce, Dijon mustard, parsley, thyme, sage, 3 g salt, and black pepper.

Mix thoroughly until everything is evenly distributed. The filling should be moist and cohesive, with visible chestnut pieces and lentils, but no loose liquid. Keep the mixture coarse rather than blending it into a smooth paste. Do not taste it after adding the raw eggs.

Step 5: Line the tin and enclose the filling

Line the base and sides of a 25 × 13 × 8 cm metal loaf tin with baking parchment, leaving enough overhang at the short ends to help lift out the finished pâté. On a lightly floured surface, roll the larger pastry portion into an approximately 43 × 31 cm rectangle, about 3 mm thick.

Ease the pastry into the tin without stretching it, pressing it gently into the base and corners. Trim away bulky folds at the corners and press the seams together firmly. Leave approximately 1 cm of pastry above the rim. Patch any small holes with pastry scraps.

Spoon in the filling in three additions, pressing each layer firmly into the corners with the back of a spoon to eliminate air pockets. Level the top. Roll the smaller pastry portion into a 28 × 16 cm rectangle, approximately 3 mm thick.

Beat the remaining egg with the milk. Brush the exposed pastry rim lightly with this egg wash, place the lid on top, and press the edges together. Trim, fold, and crimp the seam securely. Cut three 1 cm steam vents along the center of the lid. If you like, use the trimmings to make a few small pastry leaves, attaching them with egg wash without covering the vents.

Step 6: Chill, glaze, and bake until golden

Refrigerate the assembled pâté for 20 minutes. Meanwhile, place a sturdy baking sheet on the lower-middle oven rack and preheat the oven to 200°C conventional / 180°C fan / 400°F.

Brush the pastry lid and decorations with egg wash, keeping the vents clear. Set the loaf tin on the hot baking sheet and bake for 20 minutes. Reduce the oven temperature to 180°C conventional / 160°C fan / 350°F and bake for a further 50 minutes.

The pastry should be deeply golden and firm, and the center of the filling should reach 74°C / 165°F on an instant-read thermometer inserted through a vent. If the center has not reached this temperature, continue baking in 5-minute increments. Cover the top loosely with foil if it browns too quickly.

Step 7: Rest, unmold, and serve

Rest the pâté in its tin on a wire rack for 30 minutes. Carefully loosen any exposed pastry from the sides, then lift it out using the parchment, supporting the base with a wide spatula if needed.

For warm serving, cut gently into approximately 2.5 cm slices with a sharp serrated knife. For the cleanest buffet presentation, refrigerate until thoroughly chilled, preferably overnight, then slice. Let individual chilled portions stand for 20 minutes before serving if you prefer them less cold.

Arrange the slices in a slightly overlapping row, with the remaining loaf behind them. Serve cranberry relish and wholegrain mustard separately so the pastry stays crisp.

Pro Tips

Dry filling makes crisp pastry: Cook away the mushroom juices and wine, and drain the lentils thoroughly. Extra liquid is much harder to fix once the pâté is assembled.
Keep the pastry cool: If it becomes soft or greasy while rolling, refrigerate it for 10 minutes before continuing. These extra pauses are not included in the stated time.
Use cooked chestnuts: Vacuum-packed peeled roasted chestnuts are ideal. Raw chestnuts need separate roasting and peeling before they can be used here.
Choose mushrooms confidently: Cultivated oyster and shiitake mushrooms provide woodland flavor without the identification risks of foraged mushrooms. Only use wild mushrooms that have been reliably identified as edible and prepared appropriately.
Make beautiful slices: Chilling gives the filling time to firm up. Use a gentle sawing motion through the crust rather than pressing straight down.

Variations

Alcohol-free: Replace the 60 ml wine with 50 ml unsalted vegetable stock and 10 ml lemon juice. Reduce until the pan is almost dry.
Deeper woodland flavor: Replace 100 g of the fresh mushrooms with 15 g dried porcini soaked in 150 ml boiling water for 15 minutes. Drain, rinse away any grit, squeeze dry, and finely chop. Cook with the fresh mushrooms; reserve the soaking liquid for another recipe rather than adding it to this filling.
Walnut and chestnut: Replace 50 g of the chestnuts with 50 g toasted, finely chopped walnuts for a slightly firmer filling with gentle crunch. Clearly label this version as containing nuts.

Storage & Make-Ahead

Prepare ahead: Make the pastry up to 2 days ahead and refrigerate it well wrapped. The cooked mushroom-and-shallot mixture can be made 1 day ahead; cool promptly and refrigerate in a covered container. Add the remaining filling ingredients, including the eggs, when you are ready to assemble. An assembled, unbaked pâté can be covered and refrigerated for up to 12 hours; egg-wash it just before baking and check the center temperature carefully, as a thoroughly chilled filling may need extra oven time.

Refrigerate leftovers: After the initial 30-minute rest, unmold and let excess steam escape, then refrigerate within 2 hours of baking. Do not leave the whole loaf on the counter until completely cold. Once chilled, cover and keep at 4°C / 40°F or below for up to 3 days.

Freeze: Wrap chilled individual slices tightly and freeze for up to 2 months. Thaw overnight in the refrigerator. The pastry may be a little less crisp after freezing.

Reheat: Put thawed slices on a baking sheet and heat at 180°C conventional / 160°C fan / 350°F for approximately 20 minutes, until the center reaches 74°C / 165°F. Cover loosely with foil if needed. For a buffet, put out smaller batches and refrigerate portions that have not been served; discard perishable food left at room temperature for more than 2 hours.

Nutrition (per serving)

Estimated for one-tenth of the recipe, excluding optional serving accompaniments. Values vary with the mushrooms, chestnuts, and seasoning brands used.