In a large bowl add 1 cup of black beans and mash with a potato masher fairly well.
Next, add the mushrooms, along with the rest of the beans, broccoli, garlic, onion and steak seasoning and mix just until combined.
Add in the eggs, cheese, bread crumbs, and parsley then mix gently until the mixture is combined.
Set this mixture aside while you place a medium-sized non-stick pan over medium heat and add in 2 Tbl of oil.
Once the oil comes up to temperature (starts to shimmer), using moistened hands, scoop a 1/2 cup of mixture into the palm of your hand and gently shape into a burger all the while pressing together. )Add an extra tablespoon of Panko if the patties do not hold their shape.).
Place in the oil and cook for 3-5 minutes per side or until golden brown and a crust has formed on each side.
Note: these burger patties pair well with hummus and other more traditional burger sides -- .