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Crispy aubergine sandwich with sprout slaw and sweet potato ‘mayo’ recipe

Crispy aubergine sandwich with sprout slaw and sweet potato ‘mayo’ recipe

11 ratings

We all love a fast food treat every now again, and this recipe from chef Derek Sarno turns a hearty sandwich into a healthy, veg-packed meal that happens to be vegan. As Executive Chef Director of plant-based innovation at Tesco, Derek is always looking for new ways to hero vegetables, such as with these crispy, breaded aubergine steaks and spicy sweet potato ‘mayo’. Layered together with crunchy cabbage slaw, this is a sarnie with attitude. See method

  • Serves 4
  • 15 mins to prepare and 50 mins to cook, plus cooling
  • 492 calories / serving
  • Healthy
  • Vegan
  • Vegetarian
  • Dairy-free


  • 2 medium aubergines, trimmed and halved lengthways
  • 125g plain flour
  • 100ml unsweetened soya or almond milk
  • 1 tsp smoked paprika
  • 1 tbsp finely chopped fresh dill
  • 70g natural breadcrumbs
  • 1 lemon, zested
  • 1 tbsp Italian seasoning
  • 4 large white baps, halved

For the vegan slaw

  • 1 tsp sugar
  • 2 tbsp lemon juice
  • 1 tbsp sesame oil
  • 8 Brussels sprouts, trimmed and shredded
  • 100g red cabbage, shredded
  • handful mint leaves, torn

For the sweet potato ‘mayo’

  • 1 sweet potato (about 220g)
  • 100ml unsweetened soya or almond milk
  • 3 tbsp sriracha
  • 3 tbsp olive oil
  • 1 tsp sesame oil

Each serving contains

  • Energy

  • Fat

    11g 16%
  • Saturates

    3g 16%
  • Sugars

    13g 14%
  • Salt

    1.7g 28%

of the reference intake
Carbohydrate 80g Protein 18g Fibre 5g


RFO DerekSarno 155X255
  1. Preheat the oven to gas 6, 200°C, fan 180°C. Put the aubergines, cut side down, on a baking sheet lined with nonstick baking paper. Roast for 20-25 mins until very soft. Set aside to cool.
  2. Meanwhile, bake the sweet potato for the ‘mayo’ for 35-40 mins until soft. Leave to cool, then scoop out the flesh and discard the skin.
  3. Once the aubergine has cooled, use a spoon to carefully remove the flesh from the skin in one piece. Discard the skin.
  4. In a small bowl, whisk 25g flour with the milk; season. In a second bowl, mix the remaining flour with the smoked paprika, dill and 1 tsp black pepper. In a third bowl, mix the breadcrumbs, Italian seasoning and lemon zest.
  5. Lightly cover the aubergine halves in the spiced flour, then dip in the milk mixture and finally the breadcrumbs, ensuring that each one is evenly coated. Transfer to a baking tray lined with nonstick baking paper and bake for 20-25 mins until crisp and golden.
  6. Meanwhile, make the slaw. In a medium-sized bowl, whisk the sugar with the lemon juice and sesame oil until dissolved. Add the sprouts, cabbage and mint, season well and toss to coat. Set aside.
  7. Blitz the cooked sweet potato with the other ‘mayo’ ingredients in a blender until smooth.
  8. To assemble the sandwiches, cover the bottom halves of the baps with 1 tbsp of the ‘mayo’, followed by an aubergine ‘fillet’ and a heaped tbsp of slaw. Add an extra spoonful of ‘mayo’ to the inside of the top half of the baps and cover the sandwiches. Serve immediately.

Tip: You’ll make more sweet potato ‘mayo’ than you’ll need, but it will keep for up to five days in the fridge.

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