Bring a large pot of salted water to a boil and cook your noodles according to package instructions until they are al dente, then drain and rinse with cold water to stop the cooking. Set aside.
In a small bowl, whisk together the peanut butter, soy sauce, lime juice, toasted sesame oil, maple syrup, minced garlic, and chili flakes until the sauce is smooth and fragrant. This mixture should be creamy with a hint of spice and citrus aroma.
Heat your skillet or wok over medium heat. Once hot, pour in the prepared sauce and stir constantly for about 1-2 minutes until it becomes fragrant and slightly thickened, creating a glossy, rich coating.
Add the drained noodles into the skillet with the sauce. Gently toss with tongs or a fork, ensuring each strand is coated evenly with the sauce. Continue tossing for another minute until the noodles are warmed through and glistening.
Remove the skillet from heat. Taste the noodles and adjust the seasoning if needed—add more lime juice for brightness or chili flakes for extra heat. If the sauce feels too thick, stir in a splash of hot water to loosen it.
Serve the noodles immediately, garnished with chopped peanuts, scallions, or fresh herbs if desired. The dish should be glossy, flavorful, and ready to enjoy with a vibrant citrus aroma and a slight kick of spice.