Slice the butternut squash into thin half-circles. Sauté in a bit of oil over medium heat until golden and tender. Set aside.
Slice the tempeh into thin pieces. In a bowl, mix soy sauce, sesame oil, smoked paprika, brown sugar, and sriracha. Sauté the tempeh slices in oil until golden, then pour the sauce over, allowing it to absorb. Set aside.
In the same pan, add a little oil and sauté the mushroom slices until golden brown. Remove from heat.
Prepare the Potato-Mushroom Patties: Boil and mash the potatoes. Add the cooked mushrooms, chopped coriander, and spices (kala namak, chili powder, turmeric, cumin). Mix well, then shape into small patties. Shallow fry in oil until golden on both sides.
In a small bowl, whisk together Dijon mustard, balsamic vinegar, tahini, salt, and pepper. Add water to thin, if necessary.
Assemble the Sandwich: Toast your bread if desired. Layer with lettuce, potato-mushroom patties, tempeh, butternut squash, sauerkraut (optional), and drizzle with vinaigrette. Slice in half and serve!
Enjoy your cozy, fall-inspired sandwich that’s as comforting as it is nourishing.