Stuffed Mushrooms

Appetizers & Snacks

Large flat-cap mushrooms stuffed with a rich duxelles filling, their own stems finely chopped and cooked down with shallots, garlic, and thyme until deeply concentrated, then bound with crème fraîche and topped with melted, bubbling Gruyère. These French stuffed mushrooms are the kind of starter that looks like proper effort but comes together in under an hour.

Pin recipe Print

Prep Time 20 minutes mins

Cook Time 25 minutes mins

Total Time 45 minutes mins

Servings 4 As a starter

Ingredients 

1x2x3x?

For the mushrooms

• 8 mushrooms portobello or flat-cap, about 8–10cm diameter
• 1 tbsp olive oil
• salt and black pepper

For the filling

• mushroom stems
• 2 shallots
• 2 cloves garlic
• 30 gr unsalted butter
• 1 tbsp olive oil
• 2 tbsp flat-leaf parsley
• 1 tsp thyme
• 2 tbsp crème fraîche
• 40 gr breadcrumbs
• 60 gr Gruyère
• 1 pinch nutmeg
• salt and black pepper

Equipment

knife

chopping board

frying pan

baking dish

spoons for stuffing

grater

Instructions

1. Prepare the mushrooms

• Preheat your oven to 200°C / 180°C fan. Remove the stems from the mushrooms and set them aside, you'll need them for the filling. Brush the caps all over with olive oil, season with salt and pepper, and place them gill-side up in a baking dish. Don't skip the oil on the outside; it helps them colour properly rather than steam.

2. Make the duxelles

• Finely chop the mushroom stems. The finer the better, you want a rough paste, not chunky bits. Melt the butter with the olive oil in a frying pan over a medium-high heat, then add the shallots. Cook for 3–4 minutes until softened and just starting to go golden.

  Add the garlic and cook for another minute, then add the chopped mushroom stems. This is where patience comes in. Keep the heat fairly high and cook the mixture, stirring occasionally, for 8–10 minutes until almost all the moisture has cooked off. The duxelles should look quite dry and concentrated. If it steams rather than fries, the heat's too low.

3. Finish the filling

• Take the pan off the heat. Stir in the parsley, thyme, crème fraîche, breadcrumbs, half the Gruyère, a pinch of nutmeg, and salt and pepper. Mix well. The filling should hold its shape when pressed together. If it seems too wet, add a few more breadcrumbs.

4. Stuff and bake

• Divide the filling between the mushroom caps, pressing it in firmly and mounding it slightly. Don't be shy, pack it in. Scatter the remaining Gruyère over the top of each one. Bake for 20–25 minutes until the mushrooms are tender, the filling is hot through, and the cheese on top is golden and bubbling.

5. Serve

• Let them rest for 2–3 minutes before serving, the filling will be volcanic straight from the oven. Serve on a small bed of dressed salad leaves, or just on their own with good bread to mop up the juices that collect in the baking dish.

Notes

• Mushroom size matters. Too small and you’ve got nowhere to put the filling. Portobello or large flat-cap mushrooms around 8-10cm are what you want.
• The duxelles is the key step. Don’t rush it. If you leave moisture in the filling, it’ll make the stuffed mushrooms soggy. Cook until the mixture looks almost dry in the pan.
• Gruyère is traditional, but Comté is excellent here too. Both have that nutty, savoury depth that works brilliantly with mushrooms. Emmental at a push.
• Make ahead: prepare the filling up to 24 hours in advance and refrigerate it. Stuff the mushrooms just before baking, adding an extra 5 minutes to the oven time if they’re going in cold.
• Works as a main too. Three per person alongside a green salad and some crusty bread is a perfectly decent weeknight supper.

About this recipe

Stuffing vegetables has been around in French home cooking for centuries. The idea is simple, you take something hollow like a mushroom cap, fill it with something good and bake it. Nothing gets wasted and everything tastes better. Stuffed mushrooms specifically show up in French kitchens since at least the 19th century. The cap is already the perfect vessel and with the stems, you make your filling. Creating those filled mushrooms takes under an hour and taste delicious.

The duxelles, where the real story begins

The heart of good stuffed mushrooms is duxelles. Sounds fancy, but it’s quite a simple technique and it’s at the heart of this stuffed mushrooms recipe. What you do is: you take the mushroom stems, chop them super fine, and cook them down slowly in butter with shallots. You have to keep cooking them until almost all the moisture cooks out. What you are left with is this incredibly concentrated, deeply savory intense mushroom paste.

François Pierre de La Varenne figured this out in the 17th century. He was head chef to Louis Chalon du Blé, the Marquis d’Uxelles. Chefs back then often named dishes after their bosses, so that is how duxelles got its name. Pretty straightforward.

As chopping is key to the perfect duxelles to chop the stems small and evenly, having knifes that cut properly is a lot easier tow work with. Chopping the stems fine will make them release their moisture at the same rate. They cook down into this uniform, silky paste instead of some uneven mushy bits. I always use my trusty Opinel Intempora knife set for this kind of work. Opinel is this wonderful French brand from the Savoie region. They have been making knives there since 1890 and the blades stay sharp through all that fine chopping. There is no need for frustrating hard work with a dull knife, these knifes make the cooking actually pleasant. When your whole filled mushroom recipe depends on that prep work, the right knife really changes the experience.

La Varenne also wrote Le Cuisinier François back in 1651 and that cookbook was huge for French cooking. It helped move things away from all those heavy medieval spices toward the lighter, more ingredient-driven style we think of as classical French cuisine today. So when you stand there at the stove, patiently cooking all that water out of your chopped mushroom stems, you are doing exactly what French kitchens have done for nearly 400 years.

Once you get duxelles right, you start seeing it everywhere in French cooking. It goes into vol-au-vents, stuffed poultry, all kinds of fish dishes. It is a foundational technique. You can start experimenting with it in this recipe and suddenly a whole category of meals open up to you. You will find yourself reaching for that same concentrated mushroom paste in other things you cook.

Regional variations of easy stuffed mushrooms

Every region in France puts its own spin on these easy stuffed mushrooms. Up in Burgundy, they splash some local white wine into the pan when cooking the stems. Down south, you might see herbed ricotta or fresh goat cheese mixed into the filling instead of Gruyère. Provence does a version with tomatoes and herbs. They are all equally delicious. You can not go wrong trying any of them.

This recipe sticks to that straightforward bistro style. Duxelles bound together with crème fraîche, topped with plenty of Gruyère. Simple but hearty enough to feel substantial. At the same time it stays light enough to serve as a side next to something like baked trout with Dijon mustard which is a very nice pairing.

Choosing the right mushrooms for stuffed mushrooms

Mushroom quality is another thing to look out for. The filling is basically just concentrated mushroom, so you want to start with really good ones. I recommend going for those flat-cap mushrooms or portobellos. They need to be large enough to hold a generous amount of filling without collapsing in the oven. And if you can get them from a farmers market or good greengrocer, they will taste noticeably better than the standard supermarket ones of course. Not that supermarket mushrooms are bad at all, this stuffed mushrooms recipe works perfectly fine with them too. But if you happen to be near a market with proper field mushrooms, it is absolutely worth grabbing those instead.

Size is practical too. Caps that are too small give you stuffed mushrooms that disappear in two bites. They are also trickier to fill neatly. Instead look for caps between 8 and 12cm across, that size holds the duxelles comfortably and also bakes evenly.