{"slug":"mushroom-leek-pie","collection":"recipes","is_recipe":true,"visibility":"public","title":"Mushroom Leek Pie","description":"A rustic savory pie of caramelized onions, leeks, and herb-roasted mushrooms bound with egg, parmesan, and oat milk in a buttery pâte brisée shell.","body_md":"\nThis savory pie is a simple, rustic dish that is perfect as a side dish or a main. Top with a drizzle of balsamic vinegar and a sprinkle of fresh herbs. Serve hot, cold, or room temperature. This pie was an entry to the [Porches and Pies](https://www.porchesandpies.com/) pie contest in 2023.\n\n![Pie](img/full_pie.png \"Photo of full pie with rosemary garnish\")\n\n## Notes\n- This recipe requires one pie shell (half a recipe) of **Pâte Brisée**.\n- Any mix of fresh mushrooms can be used. I used a mix of oyster and shiitake.\n- While this recipe calls for oat milk, any milk can be used.\n- **Missing ingredients added to the list (2026-07-30):** olive oil, salt, pepper, the splash of water for the mushrooms, and the balsamic vinegar for serving were all called for in the steps but appeared nowhere in the ingredient list — the olive oil in particular is something you buy, and the shopping list was not carrying it. All five are now listed. **No quantity was invented for any of them**; they stay unmeasured, which is legitimate house style for oil-for-cooking and salt-to-taste, and matches how the steps already read (\"some olive oil\", \"a splash of water\"). If you want them weighed, the amounts have to come from cooking it, not from the page.\n- **Typos corrected (2026-07-30):** \"bind bake\" → blind bake, \"let cook till room temperature\" → let cool to room temperature (the original told you to keep cooking the filling you were meant to be cooling), plus \"requries\" and \"balasmic\".\n- **Times corrected (2026-07-30):** `cook_time` read 1 hour 15 minutes, which the recipe's own stated phases already exceed — 30 minutes caramelising the onions, 15 minutes combined over low heat, and 35–40 minutes in the oven is 80–85 minutes before the mushrooms are browned at all. Raised to 1 hour 30 minutes and `total_time` to 2 hours. **Both are floors, not measured figures:** the mushroom step has no stated time, and neither number includes cooling the filling to room temperature, which is unattended but real. Time it when you next make it and pin the true numbers.\n- **Provenance (2026-07-30):** `source_name` was blank; the body states this was Robert's own entry to the 2023 Porches and Pies contest, so it is recorded as `Original`.\n\n## Yield\n- One - 9 inch (23 cm) pie\n\n## Ingredients\n- 770g (28oz) trimmed and cleaned oyster and other mixed mushrooms\n- 1 large purple onion\n- 2 to 3 small/medium shallots\n- 3 leeks, white stalk and tender green stalks chopped into ¼ rounds and then thinly sliced\n- 3 to 4 Rosemary sprigs\n- 3 to 4 Thyme sprigs\n- Olive oil, for cooking the mushrooms and the onion mixture\n- Salt and black pepper, to taste\n- A splash of water, to steam the mushrooms\n- 2 large eggs\n- 80ml (⅓ cup) oat or other milk\n- 145 grams (5 oz) finely grated parmesan cheese\n- 1 pie shell from **Pâte Brisée**\n- Balsamic vinegar, for serving\n\n\n## Preparation\n### Mushrooms\nIn a large, heavy skillet, add:\n- mushrooms\n- sprig of rosemary\n- sprig of thyme\n- salt\n- pepper\n- splash of water\n\nCook over medium heat until water evaporates. Add some olive oil and cook till mushrooms are lightly browned. Discard rosemary and thyme. Move cooked mushrooms to a bowl and set aside.\n\n### Onions and Leeks\nTo the empty skillet, add:\n- onions\n- leeks\n- shallots\n- sprig of rosemary\n- sprig of thyme\n- salt\n- pepper\n\nAdd olive oil and cook over medium heat until onions caramelize, about 30 minutes. Discard rosemary and thyme. Add mushrooms to onion/leek mixture and cook another 15 minutes over low heat. Pour onion/leek/mushroom mixture into large bowl and let cool to room temperature.\n\n### Prepare Pie Crust\nWhile mixture cools, prepare one 9\" pie pan. Roll out dough (1/2 of recipe) to fit a 9\" pie pan. Place dough in pie pan and situate as needed. If using glass or ceramic pie pan, blind bake crust and cool.\n\n### Combine and bake\n1. Preheat oven to 175℃ (350℉).\n2. To the onion/leek/mushroom mixture, add eggs, milk, and cheese; stir to incorporate.\n3. Pour mixture over prepared pie crust.\n4. Bake 35 to 40 minutes until top is lightly browned. Let cool. Serve with balsamic vinegar and fresh herbs.\n\n![Pie](img/quarter_pie.png \"Photo of quarter pie with knife\")\n\n","draft":false,"servings":"8","prep_time":"30 minutes","cook_time":"1 hour 30 minutes","total_time":"2 hours","source_name":"Original","created_at":"2023-08-23T18:35:00Z","updated_at":"2026-08-27T21:25:58.904189Z","categories":["Main"],"tags":["Cheese","Eggs","Leeks","Mushrooms","Onions","Rosemary","Shallots","thyme"],"methods":["Baked"],"themes":["Vegetarian"],"ingredients":[{"section":"","items":["- 770g (28oz) trimmed and cleaned oyster and other mixed mushrooms","- 1 large purple onion","- 2 to 3 small/medium shallots","- 3 leeks, white stalk and tender green stalks chopped into ¼ rounds and then thinly sliced","- 3 to 4 Rosemary sprigs","- 3 to 4 Thyme sprigs","- Olive oil, for cooking the mushrooms and the onion mixture","- Salt and black pepper, to taste","- A splash of water, to steam the mushrooms","- 2 large eggs","- 80ml (⅓ cup) oat or other milk","- 145 grams (5 oz) finely grated parmesan cheese","- 1 pie shell from **Pâte Brisée**","- Balsamic vinegar, for serving"],"parsed":[{"raw":"- 770g (28oz) trimmed and cleaned oyster and other mixed mushrooms","qty":770,"unit":"g","item":"trimmed and cleaned oyster and other mixed mushrooms"},{"raw":"- 1 large purple onion","qty":1,"item":"large purple onion"},{"raw":"- 2 to 3 small/medium shallots","qty":2,"qty_max":3,"item":"small/medium shallots"},{"raw":"- 3 leeks, white stalk and tender green stalks chopped into ¼ rounds and then thinly sliced","qty":3,"item":"leeks, white stalk and tender green stalks chopped into ¼ rounds and then thinly sliced"},{"raw":"- 3 to 4 Rosemary sprigs","qty":3,"qty_max":4,"item":"Rosemary sprigs"},{"raw":"- 3 to 4 Thyme sprigs","qty":3,"qty_max":4,"item":"Thyme sprigs"},{"raw":"- Olive oil, for cooking the mushrooms and the onion mixture","item":"Olive oil","prep":"for cooking the mushrooms and the onion mixture"},{"raw":"- Salt and black pepper, to taste","item":"Salt and black pepper, to taste"},{"raw":"- A splash of water, to steam the mushrooms","item":"A splash of water, to steam the mushrooms"},{"raw":"- 2 large eggs","qty":2,"item":"large eggs"},{"raw":"- 80ml (⅓ cup) oat or other milk","qty":80,"unit":"ml","item":"oat or other milk"},{"raw":"- 145 grams (5 oz) finely grated parmesan cheese","qty":145,"unit":"g","item":"finely grated parmesan cheese"},{"raw":"- 1 pie shell from **Pâte Brisée**","qty":1,"item":"pie shell from Pâte Brisée"},{"raw":"- Balsamic vinegar, for serving","item":"Balsamic vinegar","prep":"for serving"}]}],"images":[{"path":"img/full_pie.png","url":"/api/v1/recipes/mushroom-leek-pie/images/full_pie.png"},{"path":"img/quarter_pie.png","url":"/api/v1/recipes/mushroom-leek-pie/images/quarter_pie.png"}],"related":[{"slug":"pate-brisee","title":"Pâte Brisée","relation":"component"}],"servings_int":8,"qc":{"status":"passed","last_checked_at":"2026-08-27T21:28:26.843001Z","checked_by":"robert@sigler.io","standard_version":"2026-07-30","findings_count":0,"stale":false}}