Toast the sourdough

• Toast the sourdough slices until golden and crisp.
• Rub the hot toast lightly with a garlic clove if you like.

Sear the mushrooms

• Heat the olive oil and butter in a frying pan over high heat.
• Add the sliced mushrooms in a single layer and let them brown without stirring.
• Stir and continue cooking until deeply golden.

Season the mushrooms

• Add the minced garlic and thyme leaves and cook until fragrant.
• Season with salt and black pepper.
• Finish with a squeeze of lemon juice.

Assemble and serve

• Pile the mushrooms onto the toasted sourdough.
• Sprinkle with grated parmesan and extra black pepper.
• Serve immediately while hot.