A coconut-milk dressing infused with garlic, ginger, turmeric and lime coats fish fillets in this sheet-pan dinner. Accompanying the fish are bright bursts of tomatoes which turn jammy under the broiler and relinquish some of their juices to the pan sauce. This sauce is silky enough to coat a spoon and packed with flavor. It pairs well with anything from snapper to flounder and even salmon, so choose the fillets that look best at the market. You’ll want to sop up the sauce with thick slices of grilled or toasted baguette, or spoon it over steamed rice.