Soak the cashews: Add 3/4 cup of raw cashews to a small bowl, and cover with boiling hot water. I use my tea kettle to warm the water up. Let them soak while you get the vegetables boiling.
Boil the vegetables: Add the carrots, potatoes, cauliflower and green beans to a large pot and cover with water. Bring to a boil and cook for 10-15 minutes, until the potatoes are fork tender. Drain and set aside.
While the vegetables are boiling, make the puree: Add the canned tomatoes, onion, ginger and garlic to a blender or food processor. Blend until a smooth puree forms.
Cook puree and spices: In a large pan (large enough to hold all the vegetable when they're done boiling) warm the oil over medium heat. Pour in the puree, being careful to avoid splashes. Stir in the spices, pepper, salt and brown sugar and simmer for 2-3 minutes, until fragrant.
Blend the cashew coconut cream: Drain the cashews. Add the cashews and the can of coconut milk to your blender (no need to rinse it out from the tomatoes), and blend until smooth. Pour the cashew/coconut mixture into the pan with the tomato puree.
Add the vegetables: Add the frozen peas and let them simmer for 1-2 minutes. Now add the boiled mixed vegetables to the pan and stir to coat them in the sauce. Simmer everything together for 10 minutes on low-medium heat, stirring frequently. If the mixture gets too thick, add a little water to thin it out. Taste; add salt or other seasonings (pepper, cayenne, brown sugar) as desired.
Serve with cooked basmati rice, chopped fresh cilantro and naan.