Turn the grill up to around 450 F.
In a food processor, combine the basil leaves, curry paste, and 1 can of coconut milk, and pulse until the basil is nicely chopped.
1 cup fresh basil leaves, 4 tablespoon Thai curry paste, 2 cans
In a saucepan over medium heat, cook the coconut curry mixture for about 3 minutes. Then add the other can of coconut milk, the water, and the fish sauce.
2 cans, ½ cup of water, 2 tbsp. fish sauce
Stir and cook until the sauce has thickened, about 10 minutes.
Coat the fish and peppers with a little olive oil and season both with sea salt and black pepper.
4 tilapia fillets, 2 large red bell peppers, Extra-virgin olive oil, Sea salt and freshly ground black pepper to taste
Grill the peppers, turning once, for about 5 minutes total.
Grill the fish, turning once, for about 5 to 6 minutes. (Be delicate when you turn them the fish can easily break apart.)
Place the fish on a plate, drizzle with the curry sauce, top with the bell peppers, drizzle with a little more sauce, sprinkle with the green onions, and serve with the lime wedges.
2 green onions, 8 lime wedges