Deep-fry the mushrooms in batches for 2 minutes until golden brown and crispy. Carefully remove and transfer to a tray or plate lined with kitchen paper. To assemble each burger, spread the ...
Process 1 burger bun in a food processor to make crumbs. Set aside. 2. In a saute pan, heat the olive oil over medium-high and saute onions with a pinch of salt until soft. Add another tablespoon of ...