Mix together the milled flax and water and set aside.
Set a nonstick skillet on medium heat. Once it’s hot, spray with olive oil then add garlic and onion. Caramelize for 3 to 5 minutes, or until golden brown and somewhat translucent, and be careful not to burn the garlic.
Add the onions to a food processor, along with raw walnuts. Blend for about 1 minute until minced.
Then add only HALF of the black beans and then the remaining ingredients – except for the flax egg and oat. Blend for 1 to 2 minutes until well combined.
Lightly mash the remaining black beans together in a bowl using a fork to create some texture for the burger. Then add the bean mixture, flax egg and raw oats. Mix everything together well, then season to taste with sea salt & pepper. Cover the bowl with plastic wrap then place in the fridge for 20 minutes.
Batter too wet? add tablespoons of raw oats
Batter too “crumbly”? Add another flax egg (1 tablespoon milled flax set in 1.5 tablespoon water)
Form four equal sized patties, then place the patties in the freezer for 20 minutes to set. This will help them retain their form when cooking.
Set a nonstick skillet on medium heat and once hot, generously spray with olive oil. Add the patties and cook for 6 to 8 minutes on each side, or until the outside edges of the patty turn brown and slightly crispy.
Enjoy the patty with a fresh salad or as a delicious postworkout hamburger.