Bring a large pot of water to a boil and cook the brown rice noodles according to the package directions. Drain and set aside.
Heat a tablespoon of oil in a sauté pan over low heat. Add the minced garlic and cook for about 2 minutes until golden and fragrant. Stir in the grated ginger and sauté for an additional minute.
Remove the pan from the heat and incorporate the peanut butter, tamari or soy sauce, rice vinegar, sesame oil, sriracha, and maple syrup. Begin with ⅓ cup of hot water, whisking thoroughly until smooth. Adjust with more water to achieve your preferred sauce consistency.
Taste the sauce and modify seasoning by adding additional soy sauce, sriracha, or other spices as desired.
Toss half of the prepared sauce with the cooked noodles. Adjust by adding more sauce based on your preference. Reserve any extra sauce for additional toppings like chicken, tofu, or vegetables.
Serve the noodles warm or chilled, garnished with crushed peanuts, scallions, red pepper flakes, or any toppings of your choice.