Begin by cooking the spaghetti or rice noodles as per the package instructions. Once cooked, drain the noodles and set them aside, ensuring to reserve a small cup of the cooking water for later use.
In a large, non-stick pan, combine the sesame oil and vegetable oil, heating them over medium heat. Once the oils are hot, add the minced garlic and grated ginger. Sauté for about 1-2 minutes, stirring continuously until fragrant and golden.
Next, introduce the sliced red bell pepper and trimmed snap peas into the pan. Stir-fry these vegetables for approximately 3-4 minutes, allowing them to soften slightly while maintaining their crispness.
While the vegetables are cooking, prepare the sauce by whisking together soy sauce, rice vinegar, sriracha, and honey (or maple syrup) in a small bowl until well combined.
Once the vegetables are ready, add the cooked noodles to the pan, then pour the prepared sauce evenly over the mixture. Gently toss everything together, adding a splash of the reserved noodle cooking water as needed to achieve a silky texture.
Incorporate the sliced green onions and toasted sesame seeds into the noodle mixture. Stir everything together until well combined and heated through, ensuring the ingredients are evenly distributed.
To serve, place the spicy sesame noodles onto plates or bowls, garnishing with fresh cilantro if desired. For an extra touch, sprinkle with additional toasted sesame seeds before presenting.