Cook the Noodles: Bring a large pot of water to a boil. Add the rice noodles and cook according to package instructions (typically 4-6 minutes). Drain and rinse under cold water to stop the cooking process. Set aside.
Prepare the Vegetables: While the noodles are cooking, slice the bell pepper, carrots, cucumber, and shred the cabbage. Place all the veggies and green onions in a large mixing bowl.
Make the Spicy Peanut Sauce: In a medium bowl, whisk together the peanut butter, soy sauce, maple syrup, lime juice, sesame oil, sriracha, and minced garlic until smooth. Adjust the seasoning with salt if needed.
Combine Everything: Add the cooled rice noodles to the bowl of vegetables. Pour the spicy peanut sauce over the top and toss everything together until the noodles and veggies are well-coated with the sauce.
Serve: Transfer the salad to serving bowls or a large platter. Top with chopped peanuts and fresh cilantro for garnish.