In a skillet over medium-high heat, add the water. Add the add onion, garlic, salt and pepper, and let cook 7-8 minutes until onions have softened. Meanwhile, in a food processor, add the cooked lentils, worcestershire sauce, miso, thyme, sage, basil and salt, and blend through. When onion mixture is ready, add this to the food processor and puree through again, scraping down sides of the bowl as needed. Add the oats and walnuts, and pulse through a few times to break up the walnut (but not fully pulverize, leave in a rough chop). Transfer mixture to a large bowl. Add apple and mix through until well combined. At this point, you can refrigerate mixture until ready to fry in patties (refrigerating for at least 1⁄2 hour will make it firmer and easier to form). Take scoops of the mixture and form into patties with your hands. In a non-skillet over medium-high heat (use a wipe of oil unless you have a very good non-stick pan), add the patties, flatten gently on the pan, and fry for 6-9 minutes on each side, until golden and a crust has developed; flip them over only once or twice (the second side will cook quicker than the first).