If using noodles that will need to be cooked, prepare them first.
Next, in a bowl, mix together Sauce ingredients. If you desire a thinner sauce, whisk in one tablespoon of filtered water.
Preheat a large pan on medium heat. Add oil and onions, stir, and cook 3 to 4 min on medium-low heat, stirring occasionally. Add bell peppers, stir, and cook 3 min, then add carrots. Stir, cook another 3 min, then remove pan from heat. Add noodles and sauce, and toss well to combine.
Serve and top with green onion, sesame seeds, fresh cilantro, and more sriracha if desired.