Oven Baked Tilapia: Lemon-Garlic Butter Fish
Mediterranean fish dishes often rely on slow poaching or pan-searing to maintain moisture. This version of oven baked tilapia uses a high temperature of 200°C (400°F) to cook the fillets rapidly. By brushing the fish with a mixture of melted butter and lemon juice, you create a protective barrier that prevents the lean meat from drying out. This method reduces the active cooking time while keeping the protein tender and juicy.
You get a light, savoury fillet with a bright citrus finish. Pat the tilapia fillets dry with paper towels before adding the butter mixture to ensure the sauce clings to the fish rather than sliding off. Use a meat thermometer to check that the internal temperature reaches 63°C (145°F). Let the fillets rest for 2 minutes before serving to allow the juices to redistribute throughout the fish.
Oven Baked Tilapia: Lemon-Garlic Butter Fish
Recipe cardIngredients
Watch how it's made
Instructions
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Prepare the oven
Preheat your oven to 200°C (400°F). Line a baking tray with parchment paper or grease it lightly to stop the fish from sticking.
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Dry the fish
Pat the tilapia fillets dry with paper towels. Arrange them side-by-side on the tray so they cook evenly without crowding.
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Infuse the butter
Melt the butter in a small saucepan over low heat until it becomes lightly foamy. Stir in the minced garlic and cook for 20 seconds to release the aroma without burning the garlic.
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Finish the sauce
Stir the lemon juice and lemon zest into the garlic butter. Brush a thin, uniform layer over each fillet to ensure every surface is seasoned.
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Season the fillets
Season the fish with salt and freshly ground black pepper. Drizzle the olive oil over the tops to help the fillets caramelise in the oven.
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Bake the tilapia
Bake for 12–15 minutes. You know the fish is done when it flakes easily with a fork and a meat thermometer reads 63°C (145°F).
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Garnish and rest
Remove the tray and add the parsley, thyme, or lemon slices immediately. Let the fillets rest for 2 minutes so the juices redistribute through the meat.
Overcooking tilapia makes the meat rubbery and dry. Use a meat thermometer to check the centre of the thickest fillet. Remove the tray from the oven exactly when the internal temperature hits 63°C (145°F) to ensure the fish remains tender.
How it differs from the traditional method
Baking at 200°C (400°F) cooks the fish faster than lower temperatures, preventing the tilapia from drying out. Pan-frying provides a crispier exterior, but oven baking ensures a uniform texture and a lighter finish. This method is better when you want a healthier, less oily meal.
What to serve with it
Serve these fillets over steamed jasmine rice with stir-fried broccoli for a balanced meal. You can also pair the fish with a crisp Greek salad and a drizzle of extra-virgin olive oil to maintain a Mediterranean style. Garnish with fresh herbs and lemon wedges for a bright presentation.
Nutrition per serving
- Calories
- 285
- Protein
- 32.4 g
- Carbs
- 3.1 g
- Fat
- 16.8 g
- Fiber
- 0.5 g
- Sugar
- 1.2 g
Estimated, and offered as a guide rather than a medical figure.
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Questions people ask
What temperature should tilapia be cooked at in the oven?
Cook tilapia at 200°C (400°F). This high temperature allows the fish to cook quickly through to the centre, ensuring the meat stays moist while the lemon-garlic butter caramelises on the surface.
Is it better to bake tilapia at 350 or 400?
Use 200°C (400°F) for this recipe. A higher temperature reduces the cooking time, which prevents the lean fillets from becoming tough or overcooked, a common issue when baking at lower temperatures like 175°C (350°F).
How long does tilapia have to cook at 400 degrees?
Bake the fillets for 12–15 minutes. You must use a meat thermometer to ensure the internal temperature reaches 63°C (145°F), as thickness varies between fillets and determines the exact timing.
About the author
Mary C. Rivero
Mary C. Rivero specializes in comforting home‑cooked meals, from hearty pastas and sheet‑pan dinners to quick weeknight snacks. Her recipes feature clear, step‑by‑step directions and practical tips, helping readers create flavorful dishes with confidence and ease.
