These hearty portobello mushrooms are filled with a rich mixture of rice, vegetables, tomato sauce and melted vegan cheese, then finished with a creamy mushroom sauce. Served alongside roasted peppers and leeks with crisp radishes and a fresh mustard-lemon dressing, this colourful dish offers the perfect balance of comforting flavours and refreshing crunch.

Ingredients
For the stuffed mushrooms
- 4 large portobello mushrooms
- 1½ cups cooked rice
- 1 small onion, finely chopped
- 1 small courgette, finely diced
- 1 small carrot, finely diced
- Stalks from the portobello mushrooms, finely chopped
- 2 garlic cloves, minced
- ¾ cup tomato sauce or Biona passata
- 1 tablespoon Biona tomato purée or kunserva
- 1 teaspoon dried oregano
- ¾ cup grated vegan cheese, divided
- ½ teaspoon smoked paprika
- 1 tablespoon Costa D'Oro olive oil
- 3 Leaves Salt and black pepper
- 3 tablespoons breadcrumbs
- 1 tablespoon Dragon nutritional yeast, optional
For the creamy mushroom sauce
- 200g button or chestnut mushrooms, sliced
- 1 garlic clove, minced
- 1 tablespoon vegan butter or olive oil
- 1 tablespoon plain flour
- 1¼ cups Ecomil plant-based oat milk
- 2 tablespoons plant-based cream, optional
- 1 tablespoon Dragon nutritional yeast
- ½ teaspoon dried thyme
- 3 Leaves Salt and black pepper
For the roasted peppers and leeks
- 2 bell peppers, sliced into strips
- 1 large leek, cleaned and sliced into thick rounds
- 6–8 radishes, thinly sliced
- 1 tablespoon Costa D'Oro olive oil
- ½ teaspoon smoked paprika
- 3 Leaves Salt and black pepper
For the dressing
- 1 tablespoon 3 Leaves lemon juice
- 1 teaspoon Biona mustard
- 1 teaspoon Biona maple/agave syrup
- 1 tablespoon capers, optional
- 1 tablespoon chopped fresh parsley
Instructions
- Preheat the oven to 200°C and line one or two baking trays with baking paper.
- Carefully remove the stalks from the portobello mushrooms and finely chop them for the filling.
- Place the mushroom caps on the tray with the hollow sides facing upwards. Brush them lightly with olive oil and season with salt and black pepper.
- Bake the mushroom caps for approximately 10 minutes. Remove them from the oven and carefully drain away any liquid they have released.
- Meanwhile, heat one tablespoon of olive oil in a frying pan. Add the onion, carrot, courgette and chopped mushroom stalks. Cook for 6–8 minutes, until the vegetables begin to soften.
- Add the garlic, oregano and smoked paprika. Cook for another minute.
- Stir in the tomato paste, tomato sauce and cooked rice. Season with salt and black pepper, then cook for another 3–4 minutes.
- Remove the filling from the heat and stir in ½ cup of the grated vegan cheese.
- Divide the rice mixture between the portobello mushrooms. Sprinkle the remaining vegan cheese over the filling.
- Combine the breadcrumbs with the nutritional yeast, if using, and sprinkle the mixture over the cheese.
- Place the sliced peppers and leeks on a separate section of the tray or on a second baking tray. Toss them with olive oil, smoked paprika, salt and black pepper.
- Bake the stuffed mushrooms, peppers and leeks for 20–25 minutes, until the mushrooms are tender, the cheese has melted and the vegetables are lightly charred.
- While everything is baking, prepare the creamy mushroom sauce. Heat the vegan butter or olive oil in a saucepan over medium heat.
- Add the sliced mushrooms and cook until softened and lightly browned. Stir in the garlic and thyme and cook for another minute.
- Sprinkle the flour over the mushrooms and stir well. Cook for one minute, then gradually pour in the plant-based milk while stirring continuously.
- Add the plant-based cream and nutritional yeast. Simmer gently until the sauce thickens, then season with salt and black pepper.
- To prepare the dressing, mix the lemon juice, mustard, maple syrup, capers and chopped parsley.
- Allow the roasted peppers and leeks to cool for two or three minutes. Add the thinly sliced raw radishes and pour over the dressing. Toss gently to combine.
- Serve each stuffed mushroom with the creamy mushroom sauce spooned over or around it, accompanied by the warm pepper, leek and radish salad.
