You can watch the video for visual instructions.Heat about 1-2 teaspoons oil in a skillet over medium heat. Add the diced onion and sauté for 8–10 minutes, until golden and lightly caramelized. Add the chopped garlic and sauté for another 30–60 seconds. Stir in the 2 tablespoons of tomato paste and cook for another 30 seconds.
Meanwhile, add the oats or buckwheat flakes to a food processor and process until they form a fine flour.
Add the drained white beans, oat flour, cooked onion and garlic mixture, soy sauce, smoked paprika, ground coriander, black pepper, liquid smoke, psyllium husk powder, and salt to the food processor.
Process until the mixture is almost smooth and can be shaped. Stop to scrape down the sides of the food processor when necessary.
Only if the mixture appears too dry, add water or vegetable broth, one spoon at a time. This is usually unnecessary because canned beans already contain plenty of moisture.
Allow the mixture to rest for 10 minutes so the psyllium husk powder can absorb moisture. If the mixture is still very soft, place the container in the freezer for 10 minutes.
Divide the mixture into 4 equal portions and shape them into medium-sized steaks.
Place the steaks in a steamer basket over gently simmering water. Cover and steam for 10–12 minutes. Make sure the steaks do not touch the water—they should be cooked by the steam only.
Remove the steaks from the steamer and allow them to cool for at least 10–15 minutes. For the firmest texture, refrigerate them for 30–60 minutes or longer.
To prepare the marinade, whisk the soy sauce, tomato paste, liquid smoke, and water together until smooth.
Brush the cooled steaks generously with the marinade.
Heat the remaining oil in a skillet over medium to medium-high heat. Add the steaks and fry for approximately 2–3 minutes per side, until golden brown.
Add the rosemary sprigs during the final 1–2 minutes. Tilt the skillet slightly and repeatedly spoon the rosemary-infused oil over the steaks.
If desired, brush the steaks with a little more marinade immediately before serving. Serve hot and enjoy.