In a mixing bowl add the tahini, peanut butter, hot sauce, soy sauce and water. Whisk until you have a smooth, thin dressing. Add a little more water if it’s too thick. Taste and add more hot sauce or soy sauce if you think it is not quite salty or spicy enough.
Add the noodles you made earlier and toss to coat. Then add the scallion and cucumber and toss again. Sprinkle with sesame seeds for a pretty garnish and enjoy!