Make a batch of Vegan Beef. Please note that the vegan beef needs to sit overnight. Thinly slice the vegan beef and heat a frying pan on medium-high heat- add a small splash of oil. Add the vegan beef and cook until lightly golden and browned, about 3-5 minutes.
Make the Russian dressing by whisking together all the ingredients in a medium-sized bowl.
Spread a heaping spoonful of the Russian dressing on the rye bread and top with thinly sliced vegan beef, swiss cheese, sauerkraut, and a drizzle of more sauce as well as the top piece of bread.
Heat a frying pan on medium heat and add enough vegan butter to coat the pan- you'll need more in between each sandwich.
Cook each side of the sandwich for about 4 to 5 minutes or until the bread is golden brown and crisp- I recommend covering the pan with a lid for the first few minutes to help the cheese melt.
Serve with more Russian dressing on the side and enjoy!