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Two stuffed mushrooms on a white plate with spinach leaves and a gold fork.

Vegetarian Stuffed Mushroom Caps

  • Author: Elizabeth Chloe
  • Prep Time: 10 minutes
  • Cook Time: 35 minutes
  • Total Time: 45 minutes
  • Yield: 2-3 servings 1x
  • Category: Dinner
  • Method: Roasting
  • Cuisine: British


These stuffed mushroom caps are a great vegetarian weeknight dinner. Filled with leeks, walnuts, mushroom, parsley, breadcrumbs and parmesan they’re full of flavour and easy to make.



  • 7 portobello mushrooms, cleaned with kitchen paper
  • 3 tablespoons olive oil
  • 1 large leek, diced
  • 50 grams walnuts, chopped
  • 40 grams panko breadcrumbs
  • 20 grams parmesan cheese, grated
  • 10 grams parsley, chopped
  • 1 teaspoon mustard powder
  • A squeeze of lemon juice
  • Salt and pepper to taste


  1. Pre-heat your oven to 180 degrees Celcius.
  2. Remove the stems from 6 of the mushrooms (save them for later) and add them, gills side down, to a roasting dish. Brush the tops with 1 tablespoon of the olive oil and sprinkle on some salt and pepper. Pop into the oven for 20 minutes.
  3. Heat another tablespoon of oil in a cast iron frying pan.
  4. Chop the mushroom stems and the remaining mushroom into chunks. Add it to your frying pan along with the leeks and cook for 5-7 minutes until the leeks have softened. Add in the walnuts and cook for another 5 minutes.
  5. While the leeks and mushrooms cook, mix the panko, parmesan and 1 tablespoon of oil together in a bowl, ensuring the oil is evenly distributed throughout.
  6. After 5 minutes remove the leek mixture from the heat. Stir in the mustard powder, parsley, lemon juice and two-thirds of the breadcrumb and parmesan into the leeks, taste and season with salt and pepper as required. Keep the remaining breadcrumbs aside for sprinkling on top later.
  7. When the mushrooms are done remove them from the oven and flip them over so the gills are facing upwards. Divide the leek stuffing equally between the 6 mushrooms then sprinkle over the remaining breadcrumbs over the mushrooms.
  8. Bake in the oven for 15 minutes, until the breadcrumbs are golden brown. Enjoy!

Keywords: Stuffed Mushrooms, Vegetarian Stuffed Mushrooms, Stuffed Mushroom Caps, Vegetarian Dinner

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