Fearne's Portobello Mushroom Steaks with Miso Butter Beans

Fearne's Portobello Mushroom Steaks with Miso Butter Beans

Co-created with Fearne Cotton, this vibrant bowl stars portobello mushroom 'steaks' seared to perfection. Serve over a comforting butter bean stew, infused with umami miso butter, velvety cashew cream and fragrant ginger and garlic. On the side? Grilled tenderstem broccoli for a hit of green. It's ready in 15 mins!

Ready in 20 High protein 2/3 daily fibre 6 plants

Serving size

Cook time: 15 mins
Cuisine: Japanese
Food group: Dairy
Allergens: Soya, Nuts, Milk

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Cooking Instructions

The protein cooking time listed in this recipe has been updated.

As of December 2025, we’ve revised cooking times for all our proteins to reflect improved food safety guidance.

Check out the latest recommended times in our Cooking Guidelines.

Before you start

  • Preheat the grill to high (240C)
  • Line a baking tray with silver foil
  • Pull out a large frying pan, a medium frying pan, a sieve, a masher & a measuring jug

Get started

  • Heat the medium frying pan with 1 tbsp oil on medium-high heat. Once hot, add the mushrooms and cook for 3-4 mins on each side, until softening
  • Meanwhile, thinly slice the onion. Trim the broccoli and cut into thirds

Grill the broccoli

  • Heat the large frying pan with 1 tbsp on medium-high heat. Once hot, add the onion and cook for 5-6 mins, until softened. Season with salt and pepper
  • Meanwhile, add the broccoli to the foil-lined baking tray. Drizzle with 1 tsp oil and season with salt and pepper. Grill for 8-9 mins, until soft and golden

Mushroom time

  • Drain and rinse the beans
  • Once softened, turn the mushrooms, stem-side down, and press down with a masher to flatten. Drain any water, then pour over the maple and half the tamari
  • Turn to coat and cook for 30 secs, then transfer to the broccoli tray and grill for 4 mins

Simmer the beans

  • Add the cashew butter, miso, ginger & garlic paste, the remaining tamari and 150ml water (75ml for 1 person) to the onion pan. Bring to the boil, then stir in the beans, crumble in three-quarters of the feta and simmer for 2-3 mins, until thickened and melted
  • Rinse the spinach, then stir though the beans for 1 min, until wilted. Season with salt and pepper to taste

Plate up

  • Thinly slice the portobello steaks
  • Share the beans between bowls, topped with the sliced portobello and broccoli. Sprinkle over the remaining feta

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