Cook the noodles: Boil according to package directions until just tender. Drain and rinse briefly under cool water to stop the cooking and prevent sticking.
Whisk the sauce: In a bowl, whisk peanut butter, soy sauce, lime juice, rice vinegar, maple syrup, sesame oil, ginger, garlic, and chili sauce.
Add warm water a little at a time until smooth and pourable.
Taste and adjust: You’re looking for creamy, salty, tangy, and slightly sweet. Add more lime for brightness, soy for salt, or sweetener for balance.
Prep the veggies: Slice the bell pepper, shred the cabbage and carrots, and chop the green onions and herbs. If using snap peas, halve them; if using edamame, thaw and drain.
Toss noodles with sauce: In a large bowl, combine noodles and about two-thirds of the sauce.
Toss until well coated.
Add the vegetables: Fold in cabbage, carrots, bell pepper, snap peas or edamame, and half the herbs. Add more sauce if needed to coat everything lightly.
Top and serve: Divide into bowls. Garnish with green onions, remaining herbs, chopped peanuts, and sesame seeds.
Serve with lime wedges.
Add protein (optional): Top with cubes of baked tofu, sliced chicken, or sautéed shrimp for a heartier meal.