Cook rice noodles according to package directions until tender. Drain and set aside.
In a large saucepan, combine coconut milk, vegetable broth, peanut butter, red curry paste, maple syrup, lime juice, minced ginger, and garlic. Whisk thoroughly until well combined.
Heat mixture over medium-high heat until it reaches a boil, then reduce heat and simmer for 10 minutes, stirring frequently, until sauce thickens.
Season with salt to taste.
Add cooked noodles to the sauce and stir gently to coat. Heat through for 2-3 minutes.
Serve immediately, garnished with chopped peanuts and scallions if desired.