Drain and discard the water from the cashews and place the cashews, date (without the soaking water), tomato paste, apple cider vinegar, salt and water in the blender and blend until creamy and smooth.
Pour the dressing into a mixing bowl and add the pickles, onion and black pepper. Stir until well combined and refrigerate.
After you have your Plant Based Meatloaf and your Thousand Island Dressing made, the next step is to assemble the sandwich. Toast two pieces of bread (or don't toast it, up to you!), then spread both pieces with a generous slather of Thousand Island Dressing.
Add a slice of Meatloaf to one side of bread, followed by some sauerkraut. Drizzle dressing on top of the sauerkraut and then top with avocado. Top your sandwich with the other piece of bread and watch your man chow down!