
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 zucchini and fennel. The diagonal slashes cut into each fish aren't just for looks; they help the heat and seasoning work all the way through, so every bite is fragrant and perfectly cooked. Roasting everything together on one baking sheet means the vegetables soak up the herby, citrusy drippings while the skin crisps up beautifully at 425°F. This is naturally grain-free from start to finish — no fillers, no starches, just honest Mediterranean ingredients doing exactly what they're supposed to do. A squeeze of fresh lemon over the platter right before serving ties the whole thing together and makes it feel genuinely restaurant-worthy. It's the kind of weeknight-or-weekend dinner that satisfies completely without any of the usual compromises.
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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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