Preheat the oven to 375° F (190° C) and prepare a baking sheet with parchment paper or a silicone mat. Set aside.
Prepare the flaxseed egg by mixing one tablespoon of ground flaxseed meal with three tablespoons of water. Set aside.
In a skillet, water sauté the onion over medium heat for around 5 minutes or until translucent and just starting to color (with a pinch of salt).
In a mixing bowl, combine the cooked soybeans, sautéed onion, minced garlic, chopped parsley, flaxseed egg, and coconut aminos. Mix well until all ingredients are evenly distributed.
Season the mixture with salt and pepper to taste, and add two tablespoons of flaxseed meal. Mix again until smooth, and the texture looks like dough, close to a paste consistency, and you can form patties with your hands easily**.
Divide the mixture into six even patties and form them into the desired shape with your hands.
They are ready to cook, or you can optionally coat them with the breadcrumbs or panko (or the coating you choose). If you like them breaded, mix the breadcrumbs (or panko) with the nutritional yeast and garlic salt on a serving plate. Place each patty into the dry breading mix and press so the coating will stick on both sides. Do the same for the rest.
Refrigerate the patties for 30 minutes to 1 hour; that way, they'll be firmer and more flavorful.
Remove the patties from the fridge, place them on the prepared baking sheet, and bake for 15-20 minutes. Take them out of the oven, flip each one, and put them back in the oven for 15-20 minutes or until golden brown on both sides.
Remove from the oven and let cool for a few minutes before serving. Serve these Vegan Soy Patties with your favorite sides, buns, and yummy toppings, and enjoy!