1. Place all vegetables in a large pot (onion, red bell pepper, carrots, mushrooms, garlic, and ginger) sauté until carrots are tender.
2. Add vegetable broth, sugar, and coconut milk and bring it to a boil and then reduce to medium heat for about five minutes.
3. Remove from the heat, add soy sauce, lime juice, and fresh cilantro. Add salt and pepper to taste. Stir and serve garnish with roasted cashews.
4. Keep the soup in a sealed container in the fridge for up to 5 days. You can also freeze it.