Add the quinoa into a small pot with 2 cups of vegetable broth or water. Cover the pot and bring to a boil. Once boiling, reduce the heat to low and let it simmer for 15-20 minutes until all of the liquid is absorbed. Let it rest for 10 minutes then fluff the quinoa with a fork and season lightly with salt.
While the quinoa cooks, thinly slice or chop the bell peppers, scallions and carrots. Add them to a bowl with the shredded cabbage, peanuts and cilantro. Mix in the quinoa once its ready.
Prepare the peanut sauce by blending all of the sauce ingredients together in a small blender or using an immersion blender.
Pour over the salad and mix well. Garnish with extra peanuts and cilantro.
Store leftovers in the fridge for up to 5 days. Serve cold or at room temperature.