Cut tempeh into triangles and grill in a pan on medium to high heat on golden brown on each side (about 3-4 minutes per side)
While tempeh cooks, add all the sauce ingredients into a bowl and whisk together.
When the tempeh is totally done cooking, turn the stove down to a low simmer and add the sauce. Make sure to coat the tempeh evenly in the sauce.
Continuously combine the tempeh with the sauce - you will notice it will almost immediately start to thicken.
Once the tempeh is evenly coated, remove from heat and serve!
Sprinkle sesame seeds on top and garnish with green onions.
