Slow Baked Snowy Grouper Recipe

Make shell stock

Heat 1 tablespoon butter in a medium saucepan over medium heat. Add shrimp shells and sauté 4–5 minutes until they turn pink and are fragrant. Add 1/4 cup white wine and scrape browned bits, then add 2 cups fish or chicken stock. Bring to a simmer, reduce heat, and simmer gently 15 minutes. Strain, pressing shells to extract flavor, and reserve stock; discard shells.

Build sauce

In a separate heavy skillet or sauté pan, melt 2 tablespoons butter over medium heat. Add chopped shallot, carrot, and celery and sweat 6–8 minutes until softened but not browned. Add smashed garlic and cook 30 seconds. Stir in tomato paste and cook 1–2 minutes to caramelize slightly. Pour 1/2 cup white wine (reserve remaining), deglaze and reduce by half.

Add the strained shell stock and 1/2 cup crushed tomatoes (or concassé). Add bay leaf and thyme, bring to a simmer, and reduce gently until slightly thickened, about 15–20 minutes. Remove bay leaf and thyme stems. If you want a smoother sauce, puree with an immersion blender or in a blender and return to pan.

Finish sauce: lower heat, stir in 1/4 cup heavy cream and 2 tablespoons cold cubed butter one piece at a time, whisking to emulsify until glossy. Taste and season with 1/2 teaspoon sea salt and 1/4 teaspoon freshly ground black pepper. Keep warm on very low heat.

Toast hazelnuts in a dry skillet over medium heat, shaking pan, until fragrant and lightly browned, 4–6 minutes. Transfer to a towel, rub to remove skins (optional), then chop coarsely and set aside for garnish.

Heat 1 tablespoon butter in a large sautée pan over medium heat. Add minced garlic and cook 30 seconds until fragrant. Add baby spinach in batches, tossing until just wilted. Continue until all spinach is wilted, about 3–4 minutes total. Remove from heat and drain any excess liquid in a colander, pressing gently to remove moisture.

In a bowl, combine softened cream cheese (or ricotta) with 2 tablespoons milk and 1 teaspoon lemon juice until smooth. Stir in a pinch of freshly grated nutmeg (about 1/4 tsp), 1/2 teaspoon coarse sea salt, and 1/4 teaspoon black pepper. Add the drained spinach and fold until evenly coated — the result should be creamy and 'snowy' white against the green. Keep warm or hold at room temperature.

Preheat oven to 275°F (135°C). Pat the grouper fillets dry with paper towels. Season both sides with kosher salt (about 1/2 tsp per fillet distributed) and black pepper. Rub each fillet with a little olive oil and the 3 tablespoons melted butter and sprinkle lemon zest over the top.

Place fillets in a shallow baking dish or on a rimmed baking sheet lined with parchment, leaving space between pieces. Cover the dish loosely with aluminum foil to retain moisture. Bake in the preheated oven until the internal temperature reaches 125–130°F (52–54°C) for moist, flaky fish, about 18–28 minutes depending on thickness (typical 1–1.5 inch fillets will take ~20 minutes). Remove from oven and let rest 3 minutes.

While the fish rests, warm the sauce gently if needed and whisk to recombine. Check seasoning and add a squeeze of the reserved white wine (about 1 tablespoon) if desired for brightness.

Spoon a nest of the snowy spinach onto each plate (about 1.5 cups per serving). Gently place a warm grouper fillet on top of the spinach.

Ladle 2–3 tablespoons of the warm sauce américaine around the fish (not all over the creamy spinach to preserve texture). Scatter toasted chopped hazelnuts over the fish and spinach, and dot with sliced chives and microgreens if using. Finish with a light drizzle (1 tsp) of extra virgin olive oil and a lemon wedge on the side.

Serve immediately so the fish remains tender and the sauce warm.