Potato Castle
A hearty vegetarian built around potatoes, peeled and thinly sliced, chestnut mushrooms, sliced and double cream — roughly 70 minutes start to finish, and rated medium to make. Scroll down for the ingredient checklist, a serving scaler and unit converter, and the method broken into 7 steps.
You'll mainly reach for oven and frying pan / skillet. At medium difficulty across 7 steps, it's manageable with a little attention. As written, it's meat-free.
What you'll need
Shopping list (4)
Pantry staples (you likely have these)
Diet: vegetarian — no meat or fish, based on every ingredient listed below.
Contains: Dairy Tree nuts
Allergen labels are informational and may not cover cross-contact; verify every package and consult a qualified professional for medical dietary needs. Diet labels are derived from the ingredient list on this page — how we verify diet and allergen labels.
Food-safety and allergen information is general, not medical advice. Follow current guidance from your local food-safety authority, verify product labels, and seek qualified advice for allergies or health conditions.
How to make it
- Preheat the oven to 190 C (170 C fan) and lightly grease a deep ovenproof baking dish with a little butter.
- Heat the olive oil and half the butter in a frying pan over medium-high heat, add the sliced mushrooms and onion and cook for 6 to 8 minutes until the mushrooms are golden and any liquid has evaporated, then stir in the garlic and chilli powder for the final minute.
- Parboil the sliced potatoes in salted water for 5 minutes until just beginning to soften, then drain well.
- Layer half the potato slices over the base of the dish, season with salt and pepper, spread over the mushroom mixture, then top with the remaining potato slices to build the castle.
- Pour the cream evenly over the layers so it seeps down through the potatoes, then dot with the remaining butter and scatter the grated fresh cheese over the top.
- Cover loosely with foil and bake for 30 minutes, then remove the foil and bake for a further 20 to 25 minutes until the potatoes are tender all the way through and the top is golden and bubbling.
- Let the dish rest for 10 minutes to set before slicing into portions and serving warm.
You'll use: Oven · Frying pan / skillet · Pan · Large pot · Saucepan
Ingredient substitutions
- Butter
- olive oil (¾ the amount) · coconut oil · margarine
- Double Cream
- heavy cream · whipping cream
Tips & common questions
How long does Potato Castle take to make?
About 70 minutes from start to finish — an estimate based on the 7 steps and 11 ingredients. Times vary with your kitchen and how much prep you do ahead.
What can I use instead of butter?
Try olive oil (¾ the amount). See the substitutions section above for more swaps.
Can I scale this recipe up or down?
Yes — use the servings control above the ingredients and every quantity rescales automatically (fractions included). Cooking times stay roughly the same; very large batches may need a little longer.
Is Potato Castle vegetarian?
Its ingredients contain no meat, fish or shellfish, so it is suitable for vegetarians. Check any cheese for animal rennet if that matters to you.
Related recipes
Adapted recipe — rewritten in our own wording from an open-licensed community cookbook, not yet independently kitchen-tested by Consomee. How we source, test & correct recipes.
Potato Castle is adapted by Consomee from the Wikibooks Cookbook, rewritten in our own wording and used under CC BY-SA 4.0. Photo: Potatoes with bacon and onion.jpg by Sumit Surai, CC BY-SA 4.0 via Wikimedia Commons. We add the serving scaler, ingredient tools, timing and structure — how we source recipes.