Prepare the vegetables: Very thinly slice carrot, cucumber, cabbage, and green onions. Roughly chop cilantro, large stems removed. Set aside.
Cook noodles: Cook your rice noodles according to package directions, leaving al dente. Drain when finished.
Make the peanut sauce: In a medium bowl, add all sauce ingredients (except water). Heat 3/4 cup water to just under boiling. Add water to bowl a couple tablespoons at a time, whisking until smooth.
Assemble your bowl: Add cooked noodles as your base followed by sliced veggies layered neatly on top.
Drizzle generously with peanut sauce and garnish with optional toppings.