Combine all the ingredients except tempeh in a large bowl. Keep 3 tablespoons of the marinade for serving. Add tempeh slices and coat evenly. Let marinate for 20-60 minutes in the fridge.
Heat a lug of olive oil in a large frying pan and add tempeh. Working in batches, cook on medium heat for up to five minutes on each side until it starts to brown. Drizzle with the reserved sauce. Enjoy!
This recipe works well with batch cooking. It keeps well in the fridge for up to 1 month. Keep the marinade separate from tempeh.
Consider making marinated tempeh a day ahead. You can marinate the tempeh for up to 24 hours.
Tempeh bacon can be baked in the oven for about 20 minutes at 350 °F (180 °C).