Skip to main content

Stuffed Portobello Mushrooms

These stuffed portobello mushrooms offer a sophisticated yet simple vegetarian option for a light dinner or a substantial starter. By roasting the mushrooms with balsamic vinegar and olive oil first, you create a rich, savoury base that perfectly complements the earthy flavour of the fungi. The filling is a nutritious blend of sautéed leeks, wilted spinach, and creamy cannellini beans, providing a satisfying texture without feeling too heavy.

This versatile dish is naturally high in fibre and packed with iron, making it a healthy choice for anyone looking to incorporate more plant-based meals into their routine. Serve these mushrooms alongside a crisp green salad or a portion of fluffy quinoa for a complete meal. The finishing touch of melted Parmesan adds a salty, umami depth that brings the whole dish together beautifully.

Continue reading below

Ingredients for Stuffed Portobello Mushrooms

  • 2 portobello mushrooms

  • 1 teaspoon olive oil

  • 1 teaspoon balsamic vinegar

  • Salt and black pepper

  • 1 leek, thinly sliced and rinsed clean (white and light green parts only)

  • 2 cups spinach leaves

  • 1/2 cup canned white kidney or cannellini beans, drained and rinsed

  • 2 tablespoons grated Parmesan cheese

Preheat the oven to 232°C. Set the mushrooms gill side up on a rimmed baking sheet. Drizzle with the oil and vinegar and season with salt and pepper. Bake for 15 minutes.

Meanwhile, coat a large nonstick skillet with cooking spray; place over medium heat. Add the leek; cook for 5 minutes, stirring. Add the spinach a handful at a time, stirring constantly, until it cooks down. Stir in the beans and salt and pepper to taste; cook for 1 minute to combine the flavours.

Fill the mushroom cavities with the spinach mixture. Sprinkle with the cheese. Bake for 10 minutes, until the mushrooms are warmed through and the cheese is melted. Serve.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 28 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
flu eligibility checker

Ask, share, connect.

Browse discussions, ask questions, and share experiences across hundreds of health topics.

symptom checker

Feeling unwell?

Assess your symptoms online for free

Sign up to the Patient newsletter

Your weekly dose of clear, trustworthy health advice - written to help you feel informed, confident and in control.

Please enter a valid email address

By subscribing you accept our Privacy Policy. You can unsubscribe at any time. We never sell your data.