Begin by cooking the rice noodles according to package instructions. Drain and set aside.
In a large pot, heat the coconut oil over medium heat. Add the sliced onion and sauté until softened, about 3-4 minutes.
Stir in the minced garlic and grated ginger, cooking until fragrant, about 1 minute more.
Add the red curry paste to the pot and stir well for another minute to release its flavors.
Pour in the coconut milk and vegetable broth, stirring until the curry paste is fully incorporated into the liquids.
Bring the mixture to a gentle simmer and add the broccoli, bell pepper, and snap peas. Cook for 5-7 minutes until the vegetables are tender yet vibrant.
Season the soup with soy sauce and fresh lime juice. Adjust seasoning to your liking.
In serving bowls, add the cooked rice noodles and ladle the hot curry broth and vegetables over the noodles.
Garnish each bowl with fresh cilantro and, if using, sliced green onions. Serve with lime wedges on the side.
Notes
Adjust the red curry paste to your preferred spice level.