A single skillet is all you need for this delicious, convenient and comforting weeknight meal. With its caramel-like tang and pleasant pucker, tamarind enlivens the marinade for fish fillets in this simple baked fish recipe. Rich with coconut milk and infused with garlic, ginger and freshly ground black pepper, the quick marinade glazes the fish and bathes the vegetables. Broccolini is used here, but cauliflower, brussels sprouts or hearty leafy greens such as chard, turnip or beet greens can be substituted. This sauce is versatile and pairs well with most fish, so go with the fillets that look freshest at the market.