Balsamic and garlic mushroom burgers recipe

Name: Balsamic and garlic mushroom burgers
Yield: Serves 4
Ingredients: 4 large flat mushrooms; 4 tsp rapeseed or olive oil; 4 Free From coconut oil alternative to jalapeño & chilli cheese slices; 4 white batch rolls, halved; 10g vegan butter alternative, melted; 2 tbsp Wicked Kitchen garlic mayonnaise with caramelised onion Flavour; 4 iceberg lettuce leaves, sliced; 1 small red onion, thinly sliced; 2 tomatoes on the vine, sliced; 5 tbsp balsamic vinegar; ½ tsp Dijon mustard; 1 tbsp lemon juice; 3 large garlic cloves, crushed; 10g fresh basil, chopped

Summer barbecues are not only for meat-eaters– Derek Sarno’s gorgeous burgers are a great plant-based alternative, and so easy to make. ‘I like to mix up the marinade the night before so that the flavours have more time to infuse,’ says Derek. ‘Plus, prepping ahead gives me more time to spend outdoors!’

See method

Serves 4
35 mins plus marinating
350 calories / serving

Shop your ingredients

Tesco Large Flat Mushrooms 250G
4 large flat mushrooms
£1.25
£5.00/kg
Crisp 'N Dry 100% Rapeseed Oil 1L
£2.25 Save 25% Clubcard Price
(£2.25/litre)
Offer valid for delivery from 29/09/2026 until 26/10/2026
4 tsp rapeseed or olive oil
£3.00
£3.00/litre
Tesco Organic Virgin Coconut Oil 300Ml
£3.25 Clubcard Price
(£10.83/litre)
Offer valid for delivery from 29/09/2026 until 26/10/2026
4 Free From coconut oil alternative to jalapeño & chilli cheese slices
£3.85
£12.83/litre
Tesco White Batch Rolls 6 Pack
Aldi Price Match
4 white batch rolls, halved
£0.45
£0.08/each
Vitalite Dairy Free Spread 500G
10g vegan butter alternative, melted
£2.00
£4.00/kg
Crucials Garlic Mayonnaise 500Ml
Everyday Low Price
2 tbsp Wicked Kitchen garlic mayonnaise with caramelised onion Flavour
£1.30
£2.60/litre
Tesco Iceberg Lettuce 200G
Aldi Price Match
4 iceberg lettuce leaves, sliced
£0.64
£3.20/kg
Tesco Red Onions Loose
Aldi Price Match
1 small red onion, thinly sliced
£0.20
£0.95/kg
Tesco Tomatoes On The Vine 500G
2 tomatoes on the vine, sliced
£1.50
£3.00/kg
Tesco Balsamic Vinegar Of Modena 250Ml
5 tbsp balsamic vinegar
£1.65
£6.60/litre
Tesco Dijon Mustard 185G
Aldi Price Match
½ tsp Dijon mustard
£0.45
£2.43/kg
Pride Lemon Juice 250Ml
Everyday Low Price
1 tbsp lemon juice
£0.80
£3.20/litre
Tesco Garlic 4 Pack
Aldi Price Match
3 large garlic cloves, crushed
£0.87
£0.22/each
Tesco Fresh Cut Basil 30G
Aldi Price Match
10g fresh basil, chopped
£0.50
£16.67/kg

Method

Preheat the barbecue and preheat the oven to gas 6, 200°C, fan 180°C. Put the mushrooms on a baking tray and brush with the oil; season. Bake for 10 mins or until starting to soften.
Meanwhile, whisk together the marinade ingredients in a small bowl. Remove the mushrooms from the oven and pour over the marinade; set aside to marinate for 10 mins or up to 24 hrs ahead.
Transfer the mushrooms with a slotted spoon to the barbecue (discard the marinade) and cook for 3-4 mins each side. Press down a few times with a fish slice until you have dark charring marks and the mushrooms are starting to crisp up.
Add a slice of cheese-alternative to the mushrooms, stalk-side up, and grill for a further 1 min until starting to melt. Lightly brush the cut sides of the buns with the melted spread, then toast on the barbecue until golden and charred.
To assemble, spread the mayo on each bun and top with lettuce, tomato, a mushroom and onions. Top with the other half of the bun to serve.

Tip: If you don’t have a barbecue or prefer to cook the mushrooms on the hob, start by heating a heavy-based griddle pan over a medium-high heat. Add the mushrooms, stalk-side down then put a smaller, heavy-based pan on top to flatten them. Griddle for 2-3 mins, flip, press down again and cook for a further 2-3 mins until charred. Continue the recipe from step 4 to finish.