Remove the block of tofu from the package and rinse with water. Place the block of tofu on a plate and then set a cutting board on top of the tofu. Place something heavy on top of the cutting board, like a few cookbooks or a heavy skillet, and set aside for 10 - 15 minutes while the liquid is pressed out of the tofu.
While your tofu is pressing whisk all of the ingredients together in a 10 - 12 inch cast iron skillet.
When the tofu is done pressing, slice into 8 - 10 slices and place gently into a well seasoned 10 inch cast iron skillet (you could also use a glass or ceramic baking dish). Turn the tofu over and gently mix with your hands so that the marinade covers all the tofu.
Preheat your oven to 375 °F (190 °C) while your tofu soaks up the marinade. Turn it over once or twice during this process so that all the sides of the tofu get some marinade action.
When the oven reaches temperature, place the skillet, uncovered in the oven for 25 minutes. After 25 minutes, take out of the oven and flip each piece over. Put back in the oven and bake for an additional 25 minutes.
Take out of the oven and allow to cool in the cast iron pan. The tofu will firm up a bit as it sets.