Slice the zucchini diagonally and set them aside
Heat the teppanyaki plate (or your grilling pan) to medium heat and roast the sesame seeds for 1/2 minute
Add the seeds to a bowl and set them aside
Add the butter and sesame oil to the grill and mix it around until the butter has melted
Add the zucchini slices to the surface and make sure every slice touches the plate
After 4 minutes flip over the zucchini and let it grill for another 4, add salt and pepper to taste
In the meantime, add the soy sauce to the bowl of sesame seeds
Cut the green onions in thin rounds
Put the zucchini on a plate, add the green onions on top and add the sauce to your taste or serve it in the bowl so your guests can add it to their liking.
Serve the zucchini as a side dish for a rice or noodle dish