Stir the vegetable broth and cornstarch together. Once the cornstarch has dissolved add the brown sugar, soy sauce, Sriracha, and ginger. Stir.
NOODLES
Heat a skillet or wok to medium-high. Add the sesame oil to a hot skillet or wok. Stir in the crushed red pepper flakes and garlic. Stir about 30 seconds then add the vegetables.
Toss the vegetables in the oil and cook 2 to 3 minutes on med-hi to high heat.
Add the noodles to the pan with the vegetables. Cook and stir for 2 minutes until heated through.
Add the sauce. Stir until the sauces coats everything. Remove from heat.
Garnish with green onions and chopped peanuts. Serve immediately.