Baked Portobello Mushrooms
baked portobello mushrooms

Baked Portobello Mushrooms

Total time: 1 hour 10 minutes
Servings: 8
baked portobello mushrooms

Last Updated on 11/01/2022 by richard

Equally good as a side or main dish, these baked portobello mushrooms are full of flavour and make a great vegetarian option for Christmas day.

baked portobello mushrooms

Baked Portobello Mushrooms

Jamie Oliver
Equally good as a side or main dish, these baked portobello mushrooms are full of flavour and make a great vegetarian option for Christmas day.
No ratings yet
Prep Time 15 mins
Cook Time 55 mins
Total Time 1 hr 10 mins
Course Side Dish
Cuisine British
Servings 8
Calories 126 kcal
How Difficult Easy
Suitable for Vegetarian Diet


  • 2 onions
  • 2 Garlic
  • olive oil
  • 20 g fresh thyme
  • 8 Portobello mushrooms
  • 50 g hazelnuts
  • 50 g stale bread
  • red wine vinegar
  • 440 g baby spinach
  • whole nutmeg for grating
  • 60 g halloumi optional


  • Preheat the oven to gas 6, 200°C, fan 180°C. Peel and finely chop the onions, peel and finely slice the garlic, and place it all in a large nonstick pan on a low heat with 1 tbsp oil. Strip in most of the thyme leaves and cook for 15 mins, or until softened, stirring regularly.
  • Meanwhile, peel the mushrooms and remove the stalks, finely chopping the stalks and peeling and adding to the veg pan as you go. Brush the mushrooms with 1 tsp oil, then arrange cup-side up on a large baking tray. Sprinkle with a pinch of black pepper and pop in the oven for 15 mins.
  • Strip the remaining thyme into a food processor with the hazelnuts, tear in the bread, add 2 tsp oil and blitz into rough crumbs.
  • Add 1 tbsp vinegar to the veg pan and stir in the spinach (in batches, if needed) with a good grating of nutmeg. Cook for 10 mins, or until any liquid has evaporated. Remove the mushroom tray from the oven and spoon the mushroomy juices into the spinach, then divide the spinach mixture between the mushrooms. Sprinkle over the nutty crumbs, grate over the cheese (if using) and baking for another 20 mins, or until golden.


Stuff the mushrooms and pop in the fridge overnight, ready to bake on the Big Day.



Calories: 126kcalCarbohydrates: 13gProtein: 7gFat: 6gSaturated Fat: 2gFiber: 4gSugar: 4g
Keyword baked, mushrooms, sides
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