I can’t get over how this baked Mediterranean white fish turns out so flaky, vibrant, and full of briny, lemony flavor while staying low carb. It looks like a restaurant dinner, but the real surprise is how light it feels.

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I’m obsessed with this Baked Mediterranean White Fish because it tastes bold without feeling heavy. I get flaky cod, briny Kalamata olives, and that bright, salty punch that makes every bite wake up.

But I also love how clean it feels, like dinner that doesn’t drag me down afterward. No bland diet plate energy here.

Just juicy fish, sharp Mediterranean flavor, and a low-carb meal I actually look forward to. And the leftovers?

Dangerous. I’ve eaten them cold straight from the fridge and felt zero shame.

This is the kind of simple dinner I keep craving on repeat nightly.

Ingredients

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White fish keeps it light, flaky, and packed with lean protein.
Olive oil adds richness without making the dish feel heavy.
Lemon juice wakes everything up with bright, fresh tang.
Garlic brings that cozy, savory kick you’ll smell right away.
Oregano and thyme give it that classic Mediterranean, herby thing.
Red pepper flakes add heat, if you like a tiny punch.
Cherry tomatoes get juicy and sweet as they bake.
Kalamata olives bring salty, briny flavor that’s honestly addictive.
Capers are tiny, sharp, and make the fish taste extra fresh.
Red onion adds a little bite and color.
Parsley keeps things fresh, green, and not too rich.
Plus, Parmesan or Pecorino adds salty, cheesy goodness if you’re feeling it.
Basically, it’s low carb but still feels like real dinner.

Ingredient Quantities

4 white fish fillets (about 6 ounces each), such as cod, halibut, or sea bass

2 tablespoons extra virgin olive oil

2 tablespoons fresh lemon juice

2 cloves garlic, minced

1 teaspoon dried oregano

1/2 teaspoon dried thyme

1/4 teaspoon red pepper flakes (optional)

1/2 cup cherry tomatoes, halved

1/4 cup pitted Kalamata olives, halved or sliced

2 tablespoons capers, drained

1/4 cup thinly sliced red onion

1/4 cup chopped fresh parsley

Salt and freshly ground black pepper, to taste

Thin lemon slices or wedges, for serving

2 tablespoons grated Parmesan or Pecorino Romano (optional)

How to Make this

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1. Preheat oven to 400°F (200°C). Lightly oil a baking dish large enough for the fillets.

2. In a small bowl whisk together olive oil, lemon juice, minced garlic, dried oregano, dried thyme, red pepper flakes if using, and a pinch of salt and black pepper.

3. Pat fish fillets dry with paper towels and place them in the prepared baking dish. Season fillets lightly with salt and black pepper.

4. Spoon or brush half of the olive oil and lemon mixture evenly over the fillets.

5. Scatter halved cherry tomatoes, Kalamata olives, capers, and thinly sliced red onion around and on top of the fillets. Drizzle the remaining dressing over the vegetables and fish.

6. If using, sprinkle grated Parmesan or Pecorino Romano lightly over the fillets and vegetables.

7. Bake in the preheated oven for 12 to 18 minutes, depending on thickness, until fish is opaque and flakes easily with a fork and tomatoes are softened.

8. Remove from oven and let rest for 2 minutes. Sprinkle chopped fresh parsley over the dish and add thin lemon slices or serve with lemon wedges.

9. Taste and adjust seasoning with additional salt, pepper, or lemon juice as desired.

10. Serve warm with a simple green salad or low carb side of your choice.

Equipment Needed

1. Oven and an ovenproof baking dish (large enough for 4 fillets)
2. Small mixing bowl
3. Whisk or fork for mixing the dressing
4. Measuring spoons and a tablespoon measure
5. Kitchen knife and cutting board
6. Paper towels for patting fish dry
7. Basting brush or spoon for spreading the dressing
8. Baking thermometer or fork to test doneness

FAQ

What temperature and how long should I bake the fish? Preheat oven to 400°F (200°C) and bake 12 to 15 minutes, or until the fish flakes easily with a fork and reaches 145°F (63°C) in the thickest part.

Can I use any white fish? Yes. Cod, halibut, sea bass, tilapia, or pollock work well. Thicker fillets may need a few extra minutes; very thin fillets will cook faster.

How can I make this recipe dairy free? Simply omit the grated Parmesan or Pecorino Romano. The olive oil, lemon, tomatoes, olives, and capers provide plenty of flavor.

Can I prepare components ahead of time? Yes. Mix the olive oil, lemon, garlic, and herbs up to 24 hours ahead and store covered in the fridge. Halve tomatoes and slice onions up to a day ahead. Dress fish and bake just before serving.

What are good substitutions for Kalamata olives and capers? Use green olives or chopped roasted red peppers if you prefer milder flavor. If avoiding capers, add a splash of extra lemon juice or a few chopped cornichons for tang.

How should I store and reheat leftovers? Refrigerate leftovers in an airtight container for up to 2 days. Reheat gently in a 300°F (150°C) oven for 8 to 10 minutes or warm in a covered skillet over low heat to avoid drying the fish.

Baked Mediterranean White Fish (Low Carb) Recipe Substitutions and Variations

White fish fillets: swap for salmon, trout, or firm-fleshed tilapia for a similar bake time and texture.
Kalamata olives: substitute with Castelvetrano olives, green olives, or chopped sun-dried tomatoes for briny or tangy notes.
Capers: replace with chopped cornichons, chopped green olives, or a teaspoon of lemon zest for a tangy pop.
Parmesan or Pecorino Romano: use grated Asiago, Manchego, or a sprinkle of nutritional yeast for a savory finish.

Pro Tips

1. Pat the fillets very dry before seasoning so the olive oil and lemon cling and the tops brown lightly instead of steaming.
2. Let the fish sit at room temperature for 15 minutes before baking. That helps it cook evenly so thinner edges do not overcook while the center finishes.
3. If you want extra punch, briefly sauté the onions and tomatoes in the dressing until the onions soften, then spoon them over the fish before baking. They will release less liquid and concentrate the flavors.
4. Use a probe thermometer to pull the fish at 130 to 135°F for a moist, flaky result; residual heat will carry it the rest of the way.
5. Finish with a small splash of lemon juice and a sprinkle of fresh parsley right before serving to brighten all the flavors and keep the herbs vibrant.

Baked Mediterranean White Fish (Low Carb) Recipe

Recipe by Filip Tappenela

0.0 from 0 votes

Servings

servings

Calories

260

kcal

Equipment: 1. Oven and an ovenproof baking dish (large enough for 4 fillets)
2. Small mixing bowl
3. Whisk or fork for mixing the dressing
4. Measuring spoons and a tablespoon measure
5. Kitchen knife and cutting board
6. Paper towels for patting fish dry
7. Basting brush or spoon for spreading the dressing
8. Baking thermometer or fork to test doneness

Ingredients

4 white fish fillets (about 6 ounces each), such as cod, halibut, or sea bass
2 tablespoons extra virgin olive oil
2 tablespoons fresh lemon juice
2 cloves garlic, minced
1 teaspoon dried oregano
1/2 teaspoon dried thyme
1/4 teaspoon red pepper flakes (optional)
1/2 cup cherry tomatoes, halved
1/4 cup pitted Kalamata olives, halved or sliced
2 tablespoons capers, drained
1/4 cup thinly sliced red onion
1/4 cup chopped fresh parsley
Salt and freshly ground black pepper, to taste
Thin lemon slices or wedges, for serving
2 tablespoons grated Parmesan or Pecorino Romano (optional)

Directions

Preheat oven to 400°F (200°C). Lightly oil a baking dish large enough for the fillets.
In a small bowl whisk together olive oil, lemon juice, minced garlic, dried oregano, dried thyme, red pepper flakes if using, and a pinch of salt and black pepper.
Pat fish fillets dry with paper towels and place them in the prepared baking dish. Season fillets lightly with salt and black pepper.
Spoon or brush half of the olive oil and lemon mixture evenly over the fillets.
Scatter halved cherry tomatoes, Kalamata olives, capers, and thinly sliced red onion around and on top of the fillets. Drizzle the remaining dressing over the vegetables and fish.
If using, sprinkle grated Parmesan or Pecorino Romano lightly over the fillets and vegetables.
Bake in the preheated oven for 12 to 18 minutes, depending on thickness, until fish is opaque and flakes easily with a fork and tomatoes are softened.
Remove from oven and let rest for 2 minutes. Sprinkle chopped fresh parsley over the dish and add thin lemon slices or serve with lemon wedges.
Taste and adjust seasoning with additional salt, pepper, or lemon juice as desired.
Serve warm with a simple green salad or low carb side of your choice.

Notes

Below you’ll find my best estimate of this recipe’s nutrition facts. Treat the numbers as a guide rather than a rule—great food should nourish both body and spirit. Figures are approximate, and the website owner assumes no liability for any inaccuracies in this recipe.

Nutrition Facts

Serving Size: 230g
Total number of serves: 4
Calories: 260kcal
Fat: 13.2g
Saturated Fat: 3.3g
Trans Fat: 0g
Polyunsaturated: 1.1g
Monounsaturated: 7g
Cholesterol: 85mg
Sodium: 700mg
Potassium: 850mg
Carbohydrates: 6g
Fiber: 1.5g
Sugar: 3g
Protein: 36g
Vitamin A: 900IU
Vitamin C: 15mg
Calcium: 80mg
Iron: 1.3mg

Baked Mediterranean White Fish (Low Carb) Recipe

Ingredients

Ingredient Quantities

How to Make this

Equipment Needed

FAQ

Baked Mediterranean White Fish (Low Carb) Recipe Substitutions and Variations

Pro Tips