These steaks deliver that deep, fire‑kissed satisfaction of a classic barbecue while staying completely plant‑powered. Thick portobello caps soak up a rich, savoury marinade of balsamic vinegar, miso, garlic, ginger, thyme, paprika, and a touch of liquid smoke, transforming into tender, juicy “steaks” with a bold umami depth and a beautifully charred edge. As they grill, the mushrooms caramelise, their natural juices mingling with the smoky marinade to create a flavour that’s earthy, robust, and incredibly moreish — the kind of dish that feels indulgent yet nourishing.

Health Benefits

This dish brings more than flavour. Portobello mushrooms are naturally rich in B‑vitamins, which support steady energy production, and selenium, a key antioxidant that helps reduce oxidative stress and supports immune resilience. Their high beta‑glucan content contributes to gut health and may help maintain balanced cholesterol levels.

The marinade ingredients add their own functional benefits:

Balsamic vinegar contains polyphenols that support vascular health and stable blood sugar responses.

Ginger offers anti‑inflammatory and digestive support, helping soothe the gut and enhance nutrient absorption.

Garlic contains natural antimicrobial compounds and may support heart health by improving circulation.

Thyme brings antioxidants that help protect cells from everyday stress.

Miso paste, a fermented food, introduces beneficial enzymes and compounds that can support gut microbiome diversity.

Paprika adds carotenoids that support eye and skin health.

Together, these ingredients create a dish that’s not only rich in smoky, satisfying flavour but also aligned with whole‑food, plant‑based nourishment — supporting energy, digestion, immunity, and overall vitality.

Grilled Smokey Portobello Steaks

Catherine Barclay

Grilled smoky portobello steaks soak up a bold mix of balsamic, miso, garlic, ginger, thyme, paprika, and a whisper of liquid smoke, transforming into tender, charred “steaks” with deep umami and a satisfying, meaty bite.

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Course Main Course

Servings 2 servings

Ingredients

  

1x2x3x

• 4 large portobello mushrooms
• ¼ cup balsamic vinegar
• 2 sprigs fresh thyme or one tbsp dried
• 1 tsp grated ginger
• 2 cloves garlic minced
• 1 tsp paprika
• 2 tbsp miso paste
• 2 drops liquid smoke

Instructions

 

• Remove the stems from each mushroom and carefully prick with a fork.
• Combine all marinade ingredients into a large bowl and mix thoroughly
• Add the mushroom, spoon over the mix to make sure it's completely covered, then leave to marinate for at least 10 minutes.
• Place the mushrooms in a sandwich press or grill in the oven (180℃/350℉) and baste with any leftover liquid, then grill for 5 minutes.
• Flip, baste and repeat for another 5 minutes
• Serve immediately.

Keyword Fiber rich, Fibre rich, mushrooms, no oil, plant-based, plantbased, vegan, vegeterian, wfpb, wfpbnooil, wholefood

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