2 Portobello mushrooms, stalks removed
beef tomato, sliced, to serve
250g/9oz button or chestnut mushrooms, sliced
6 medium closed cup or chestnut mushrooms
2 garlic cloves, finely chopped
squeeze lemon juice
baby gem lettuce leaves, to serve
1 tbsp chopped fresh parsley (optional)
red onion, sliced, to serve
1 tbsp chopped fresh rosemary
2 thyme sprigs, leaves picked, to garnish (optional)
2 tbsp balsamic vinegar
salt and freshly ground black pepper
1 tbsp olive oil
1 tbsp olive oil, plus extra for greasing
½ tsp paprika
1 tbsp soy sauce
25g/1oz butter
50g/1¾oz butter
2 slices cheese of choice, to serve
2 slices thick cut bread, toasted
2 burger buns, to serve