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The perfect Christmas side dish, Pomme Duchesse is a festive treat made with creamy mashed potatoes, flavored with garlic powder, black pepper, herbs de Provence, and Parmesan cheese. The mixture is piped into elegant shapes, baked until golden, and finished under the broiler for a crisp exterior. A brush of melted butter adds a final touch of richness, making this dish a standout on any holiday table.
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Boil the potatoes until fully tender, then mash until smooth.
Add garlic powder, black pepper, salt, herbs de Provence, grated Parmesan, and egg yolk. Mix well.
Transfer the mixture to a piping bag and pipe onto a parchment-lined tray.
Bake at 200°C for 20 minutes.
Remove from the oven, brush with melted butter, then return under the broiler for 15 minutes until golden and crisp.
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For extra crispness, ensure the potatoes are mashed very smoothly without lumps.
If you don’t have a piping bag, use a zip-top bag with a corner snipped off.
You can substitute herbs de Provence with a mix of thyme, rosemary, and oregano.
Can I make Pomme Duchesse ahead of time?
Yes, you can prepare the mashed potato mixture and pipe it onto the tray. Cover and refrigerate until ready to bake.
What can I use instead of Parmesan cheese?
You can substitute Parmesan with Pecorino Romano or Gruyère for a similar flavor profile.
How do I prevent the mixture from sticking to the piping bag?
Ensure the mixture is smooth and not too thick. If needed, lightly grease the inside of the piping bag.
Can I freeze Pomme Duchesse?
Yes, pipe the shapes onto a tray and freeze them. Once frozen, transfer to an airtight container. Bake directly from frozen, adding a few extra minutes to the cooking time.
What is the best way to reheat leftovers?
Reheat in the oven at 180°C for 10–15 minutes to restore crispness.
