Add the olive oil to a pot along with the chopped onion, garlic, ginger, red curry paste, cayenne pepper, paprika and turmeric and sauté until the onions are softened.
Add in the chopped sweet potatoes and lentils and toss to mix in with the spices.
Add the chopped tomatoes, vegetable stock and coconut milk and bring to the boil. Cover the pot and let it simmer until the sweet potatoes are fork tender (around 10-12 minutes).
Add in the peanut butter and stir in until melted.
Add in the fresh basil and stir in until wilted.
Add the coconut sugar and salt and pepper to taste.
Serve over basmati rice and top with crushed peanuts and fresh basil.
