Cook and drain the noodles according to the package directions.
In a medium bowl, add the sesame oil, peanut butter, honey, soy sauce, rice vinegar, garlic and ginger. Whisk until well combined. The peanut butter should completely break down to create a smooth sauce.
Pour the sauce over the hot noodles. Toss to coat.
If using, top serving with 1 sliced green onion and 1/2 teaspoon sesame seeds.