Bring a pot of water to a boil and cook the noodles according to package instructions.
In a bowl, add peanut butter, water, soy sauce, hoisin sauce, sesame oil and chili garlic sauce and microwave until warm about 30 seconds to one minute. Whisk sauce until combined.
Add peanut butter sauce to drained noodles and toss to combine. Top with sesame seeds and scallions. Happy nomming!