Baked White Fish Fillet with Tomato Sauce

Sometimes, the most satisfying meals come from the simplest ingredients and a little imagination. Our Baked White Fish Fillet with Tomato Sauce is just that—an effortless yet flavor-packed dish that blends tender white fish with roasted vegetables and a beautifully seasoned tomato sauce. We created this recipe to bring out the natural sweetness of the cherry tomatoes and the mildness of the fish, while enhancing everything with a few unexpected spices. It’s a dish that feels rustic and refined at the same time, made to impress without overwhelming the plate. If you love creative yet grounded meals, this one might become a favorite.

Why Choose Baked White Fish Fillet with Tomato Sauce?

We wanted something different than the usual lemon-and-herb fish dishes. We were craving boldness, but not complexity. That’s how we arrived at this idea: bake a white fish fillet with colorful vegetables and top it with a homemade tomato sauce, rich in flavor and depth. The baking process keeps everything juicy and lets the sauce infuse every bite with warmth. It’s not spicy or too sharp—just smooth, cozy, and layered. This meal has quickly become our go-to when we want something hearty but not heavy. The contrast between the flaky fish and roasted tomatoes is absolutely delightful.

Ingredients for Baked White Fish Fillet with Tomato Sauce

To make this dish, you don’t need fancy ingredients, but a few quality choices make all the difference:

  • 1 thick white fish fillet (like cod or hake)
  • 1 cup cherry tomatoes, halved
  • 1 cup Brussels sprouts, trimmed and halved
  • 1 small onion, cut into wedges
  • 2 cloves garlic, thinly sliced
  • 2 tbsp olive oil
  • 1 tsp smoked paprika
  • 1/2 tsp crushed pink peppercorns
  • 1/4 tsp ground fennel seeds
  • Sea salt, to taste
  • Freshly chopped parsley, for garnish

Tomato Sauce:

  • 1/2 cup canned crushed tomatoes
  • 1 tbsp olive oil
  • 1 clove garlic, minced
  • 1/2 tsp ground sumac
  • A pinch of chili flakes
  • 1/4 tsp dried mint
  • Salt, to taste

These ingredients create a unique balance. The pink peppercorns and fennel add subtle sweetness, while the sumac and mint lift the tomato sauce with a citrusy, earthy twist.

How to Prepare This Flavorful Fish Dish

Start by preheating your oven to 200°C (390°F). On a baking tray or shallow ceramic dish, arrange the cherry tomatoes, Brussels sprouts, onion, and garlic slices. Drizzle with one tablespoon of olive oil, sprinkle with smoked paprika and salt, and mix gently with your hands.

Place the fish fillet on top of the vegetables. Rub it lightly with olive oil, then sprinkle crushed pink peppercorns and fennel over it. The fillet should sit comfortably in the middle, with the vegetables surrounding it like a warm blanket of flavor.

Bake for around 18–20 minutes or until the fish flakes easily and the vegetables are slightly golden and caramelized.

While the fish is baking, heat a small saucepan over medium heat. Add the olive oil, followed by the minced garlic. Once fragrant, stir in the crushed tomatoes, sumac, mint, and chili flakes. Simmer gently for about 6–8 minutes until the sauce thickens slightly and becomes smooth.

When ready, spoon the tomato sauce gently over the baked fish and garnish with fresh parsley. Serve hot and enjoy the aroma.

Baked white fish fillet served with roasted cherry tomatoes, Brussels sprouts, and rich tomato sauce in a rustic ceramic bowl.
Baked White Fish Fillet with Tomato Sauce

Serving Suggestions to Elevate the Plate

This dish doesn’t need much to shine, but we love adding a side of warm crusty bread or simple roasted baby potatoes. You could also serve it with herbed couscous or a light bulgur salad. A small squeeze of lemon right before serving will brighten all the flavors without overpowering them.

What Makes Baked White Fish Fillet with Tomato Sauce Special?

It’s not just another fish dish. The magic comes from the details—the roasted vegetables, the unexpected spice blend, and that smooth tomato sauce with just the right kick. We took familiar ingredients and layered them in a way that feels fresh. The fennel gives the fish a sweet, almost anise-like edge, while the mint in the sauce adds an herbal surprise that keeps things interesting.

We often make this dish when we want to serve something thoughtful without spending hours in the kitchen. It’s balanced, bold, and made with ingredients that let the fish stay the star.

Creative Twists and Ingredient Variations

While we love this version, there are so many ways to play with the base idea. Sometimes, we swap Brussels sprouts for zucchini or roasted bell peppers. When tomatoes aren’t in season, sun-dried tomatoes soaked in olive oil make a great substitute.

If you prefer spicier dishes, you can add harissa paste to the tomato sauce or use cayenne instead of chili flakes. For a more Mediterranean version, we’ve added a few olives and capers to the baking dish, which bring tang and saltiness.

If you’re not into fish, this sauce also works beautifully over roasted eggplant or grilled halloumi. We’ve even tried it with leftover grilled chicken and loved the result.

This flexibility makes the dish ideal for experimenting based on what’s fresh, what’s in your pantry, or simply what you feel like tasting that day.

Final Thoughts on Baked White Fish Fillet with Tomato Sauce

We keep coming back to this recipe not only for its flavor but also for the joy of creating something beautiful from humble ingredients. Baked White Fish Fillet with Tomato Sauce is a dish that invites improvisation and sharing. Every time we prepare it, it feels slightly different—more tomatoes one day, a touch more garlic the next—but always satisfying.

If you’re looking for new ways to enjoy seafood at home, we hope this idea gives you that gentle nudge to try something bold yet simple. Whether for a quiet evening or a cozy weekend meal, this recipe brings warmth to the table.

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