This is what your tempeh will look like after adding the sauce. Sauce ingredients:
– Soy sauce
– Brown sugar
– Garlic powder
– Onion powder
– Sesame oil
The sugar will caramelize and start to burn quickly, so you want to get this stuff in the pan, coat all of the tempeh, and then start getting it out of the pan as soon as it starts to reduce and get sticky. While removing from the pan, you will want to scrape the bottom with your spatula so that the tempeh has some of this sticky reduction on it. Trust me – the flavor is awesome once the sandwich is finished.
Set the cooked tempeh aside and get ready for the next step. Next, you’ll arrange your sandwiches to be toasted in the oven. Traditionally, (at least I think) Reuben’s are made with rye bread. I have made this recipe with rye, pumpernickel, and wheat bread. Just use a good bread (or make your own awesome bread!) and you’ll be fine.