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The mushrooms give off more liquid than you might expect, and for a few minutes the skillet can look like it’s headed toward soup. Keep cooking until that moisture disappears and the mushrooms start to brown; that’s when these mini mushroom and Gruyere pot pies get their deep, savory base. I like making them in individual ramekins because every serving gets its own tall, flaky pastry lid.

The filling gets its body from flour stirred into the mushroom mixture, then broth and cream added gradually. Gruyere goes in after the skillet comes off the heat, where it melts smoothly into the sauce instead of spending extra time over a hot burner. Let the filling cool before topping it, and the puff pastry has a better chance to bake up crisp and golden over all that creamy mushroom goodness.

Why These Pot Pies Need a Pastry Lid, Not a Bottom Crust

These individual pies are built around a creamy mushroom filling with puff pastry only on top. That format is doing useful work: the filling stays in the ramekin, while the pastry gets direct exposure to the hot oven air and has room to rise and turn deeply golden. A bottom layer of pastry would sit under the creamy filling, where it would have a harder time staying crisp.

The sauce needs to be thick enough to sit neatly in each ramekin rather than pour like soup. Flour stirred into the mushrooms gives the broth and cream something to cling to, and the short simmer lets that sauce thicken before the cheese goes in. Add the Gruyere off the heat, once the sauce has already reached the right consistency. It melts into the filling without needing a long boil, and the finished mixture stays rich and spoonable beneath its pastry cap.

Individual portions also make it easy to divide the filling evenly and give each pie its own lid. Use oven-safe ramekins, set them on a rimmed baking sheet, and keep the pastry circles just wide enough to rest against the rims.

What the Mushrooms, Gruyere, and Puff Pastry Each Bring

• Cremini mushrooms — Their savory, earthy taste gives the filling its main character. Choose firm mushrooms with dry-looking caps; button mushrooms work as a substitute, though the flavor is milder. Slice them evenly so they cook at the same pace.
• Gruyere — This cheese melts smoothly and adds a nutty edge that balances the cream. Emmental is a useful substitute with a similarly good melt and a slightly milder taste. Freshly shredded cheese melts more evenly than a bag of pre-shredded cheese.
• Puff pastry — Frozen puff pastry gives each pie a flaky, layered lid without making a separate dough. Thaw the sheet before cutting, but work with it while it’s still cool and manageable; pastry that gets warm and sticky is harder to handle.
• Heavy cream — Cream gives the sauce a fuller texture than broth alone. Half-and-half can stand in, but the sauce will be lighter; simmer it until it thickens before adding the cheese.
• Fresh thyme — Its woodsy, savory notes suit the mushrooms without overpowering them. Fresh leaves bring a brighter taste than dried thyme, so use fresh when you can.

From Browned Mushrooms to Golden Pastry Lids

Soften the onion and brown the mushrooms

Heat the oven to 400°F and set six 8-ounce oven-safe ramekins on a rimmed baking sheet. Melt the butter with the olive oil in a 12-inch skillet over medium heat, then cook the finely chopped onion for 3 to 4 minutes, stirring, until softened. Add the sliced mushrooms, kosher salt, and black pepper; cook for 8 to 10 minutes, stirring occasionally. Keep going until their liquid has evaporated and the mushrooms look browned rather than wet.

Thicken the filling before adding the cheese

Stir in the minced garlic and cook for 30 seconds, just until fragrant. Sprinkle in the flour and stir for 1 minute so it coats the mushrooms. Gradually stir in the vegetable broth, taking a moment to smooth out any lumps before adding more. Stir in the heavy cream and thyme, then simmer for 2 to 3 minutes, stirring, until the sauce thickens.

Finish the filling and cut the pastry

Take the skillet off the heat and stir in the shredded Gruyere until it melts. Leave the filling to cool for 10 minutes; it should still be creamy, but no longer steaming heavily when you spoon it into the ramekins. Divide it evenly among the six dishes. Cut six pastry circles about 1/2 inch wider than the ramekin tops so there’s enough pastry to rest against each rim.

Top, egg-wash, and bake

Lay one pastry circle over each filled ramekin and press the edges lightly against the rims. Beat the egg with the water, then brush the pastry tops with the egg wash. Bake for 20 to 25 minutes, until the pastry is puffed and deeply golden and the filling bubbles at the edges. Let the pies rest for 10 minutes before serving; the ramekins and filling will be very hot straight from the oven.

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Mini Mushroom and Gruyere Pot Pies

Mini mushroom and Gruyere pot pies have a creamy, savory mushroom filling beneath puffed, deeply golden pastry. The filling is cooked in a skillet, topped in individual ramekins, and baked until bubbling at the edges.

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Prep Time 20 minutes mins

Cook Time 39 minutes mins

Cooling and resting 20 minutes mins

Total Time 1 hour hr 19 minutes mins

Servings: 6 servings

Course: Dinner

Cuisine: American

Calories: 540

Ingredients Equipment Method Notes

Ingredients

  

For the filling

• 2 tbsp unsalted butter
• 1 tbsp olive oil
• 1 yellow onion medium, finely chopped
• 1 lb cremini mushrooms sliced
• 1 tsp kosher salt
• 0.5 tsp black pepper
• 2 cloves garlic minced
• 3 tbsp all-purpose flour
• 0.75 cup vegetable broth
• 0.33 cup heavy cream
• 1 tsp fresh thyme leaves
• 0.75 cup Gruyere cheese shredded

For the pastry tops

• 1 puff pastry sheet, frozen, thawed
• 1 egg large
• 1 tbsp water

Equipment

• 6 8-ounce oven-safe ramekins
• 1 12-inch skillet
• 1 rimmed baking sheet

Method

 

Make the filling

1. Heat the oven to 400°F.
2. Set six 8-ounce oven-safe ramekins on a rimmed baking sheet.
3. Melt the butter with the olive oil in a 12-inch skillet over medium heat.
4. Add the onion and cook for 3 to 4 minutes, stirring, until softened.
5. Add the mushrooms, salt, and pepper; cook for 8 to 10 minutes, stirring occasionally, until their liquid has evaporated and the mushrooms are browned.
6. Stir in the garlic and cook for 30 seconds.
7. Sprinkle in the flour and stir for 1 minute.
8. Gradually stir in the broth until smooth.
9. Stir in the cream and thyme.
10. Simmer for 2 to 3 minutes, stirring, until thickened.
11. Remove the skillet from the heat.
12. Stir in the Gruyere until melted.
13. Let the filling cool for 10 minutes.

Assemble and bake

1. Divide the filling among the ramekins.
2. Cut six pastry circles about 1/2 inch wider than the ramekin tops.
3. Lay one pastry circle over each ramekin, pressing the edges lightly against the rims.
4. Beat the egg with the water.
5. Brush the pastry tops with the egg mixture.
6. Cut a small vent in the center of each pastry top.
7. Bake for 20 to 25 minutes, until the pastry is puffed and deeply golden and the filling bubbles at the edges.
8. Let the pot pies rest for 10 minutes before serving.

Notes

For crisp pastry, let the filling cool before adding the pastry tops. Refrigerate leftovers for up to 3 days; freeze baked pot pies, yes, for up to 2 months. For a gluten-free option, use gluten-free puff pastry and a 1:1 gluten-free flour blend.