
Whole roasted fish is one of those showstopper meals that looks far more impressive than the effort it actually takes. Two beautiful fish — branzino, sea bass, or red snapper all work wonderfully — get stuffed with lemon rounds, fresh thyme, rosemary, garlic, and parsley before hitting a hot oven alongside a bed of sliced zucchini and fennel. The result is fragrant, herb-forward, and deeply satisfying in that clean, coastal way that makes you feel like you're eating somewhere with a sea view. Every single ingredient here is naturally free of sweeteners, so there's no need to scan labels or swap anything out — this dish just works as written. Scoring the fish before roasting is the small technique that makes a real difference, letting the seasoning sink into the flesh and helping everything cook evenly all the way through. A squeeze of fresh lemon at the table ties it all together and brightens the savory roasted vegetables underneath. Whether you're cooking for a weeknight dinner or something that needs to impress, this one earns its place at the table.
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Preheat the oven to 425°F (220°C). Toss the zucchini and fennel with 1 tbsp of the olive oil, the dried oregano, and a pinch of salt and pepper on a large rimmed baking sheet, then spread them into an even layer.
Pat the fish completely dry inside and out with paper towels. Using a sharp knife, cut 3 diagonal slashes about 1/2 inch deep through the thickest part of each fish on both sides — this helps the fish cook evenly and allows the seasoning to penetrate.
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