MAKE THE STEAKS:
Saute the onions until golden, and set aside.
Add all the ingredients for the steaks to a blender, except the vegetable oil for frying the filets and the potato starch. Blend until smooth
Pour the mixture into a bowl. Gradually add the potato starch until it forms a semi-mouldable dough. This dough, unlike a hamburger dough, gets softer, it is expected
The steaks will be shaped as they are fried. So with a spoon, take a little bit of dough and pour it into a frying pan with the hot oil, allow the balls of dough to fry for a minute, after that with a spatula press the steaks until they are the thickness of your taste. Flip the steaks so they cook properly on both sides. Repeat the process until the dough comes to an end.
Don't add too much potato starch so the steak doesn't lose the flavor of the ingredients. This is not supposed to be a moldable dough, that's the idea, so don't worry.
MAKE THE SAUCE:
Add olive oil to a skillet over medium heat, then add the sliced onions and allow them to saute until golden, then add the herbs, saute for a few seconds, add the soy sauce and a splash of water, stir to combine, and turn off the heat and serve it over the vegan steaks.