If I had a photo, I would most certainly use it. That is... unless the photo I have sucks. For now, you'll just have to picture a big heaping helping of
Heat non-stick pan, add butter and oil and add onions - cook over medium heat stirring often, about 20 minutes or until golden, remove to a plate but don’t clean the pan
‘Dry cook’ onion, peppers and mushrooms in a non-stick pan until just softened and dry, 5-7 minutes
Do the same with the beans in another pan until beginning to stick
Put onions, peppers, mushrooms and black beans into the bowl of a processor, pulse 3 or 4 times then add the cumin, garlic powder, 1/3 cup of the panko, 2 tablespoons of the flour & salt & pepper
Process until really well combined, form into 2 large, or 3 medium patties and put on a parchment covered plate, and refrigerate 30 minutes
Coat the patties (in this order) using 3 separate bowls for remaining flour, eggs and remaining panko
Heat the pan you cooked the onions in, add a little more oil and cook patties until crispy and brown on each side (about 3-4 minutes per side)
Add cheese when you flip them over, let cheese melt
Toast buns lightly and build: bottom bun, guacamole, pattie with cheese, onions, bun top.