If you’re in the mood for a refined dinner that feels restaurant-worthy but is surprisingly easy to prepare, baked sea bass with fennel gratin is the answer. This dish blends the mild, buttery taste of sea bass with the sweet, slightly licorice-like flavor of fennel, creating a unique and memorable combination.
Sea bass is a favorite among seafood lovers for its delicate texture and clean flavor. When baked, it stays moist and flaky, especially when drizzled with a touch of olive oil, lemon juice, and a sprinkle of salt and pepper. A few fresh herbs, like thyme or dill, can elevate the fish even further without overpowering its natural taste.
But the real star of this dish might just be the fennel gratin. Thinly sliced fennel bulbs are layered in a baking dish, then coated with a light cream or béchamel sauce and finished with a dusting of Parmesan cheese. Once baked, the fennel turns meltingly tender with crispy golden edges and a slightly caramelized surface that pairs beautifully with the fish.
When served together, the contrast between the flaky sea bass and the rich, creamy fennel makes every bite feel luxurious yet comforting. A few lemon wedges on the side help cut through the richness and keep the dish tasting light and fresh.
This meal is perfect for a cozy night in or a dinner party where you want to impress without stress. It can be assembled ahead of time, especially the fennel gratin, leaving you free to focus on baking the fish just before serving.
Pair it with a crisp white wine, like a Sauvignon Blanc or Pinot Grigio, and maybe a simple arugula salad on the side, and you’ve got a dinner that’s both elegant and effortless. Whether you’re a seasoned cook or just experimenting with seafood, baked sea bass with fennel gratin is a dish that delivers on flavor, texture, and style.

Ingredients
- 2 sea bass fillets
- 1 fennel bulb sliced
- 1 cup heavy cream
- 1 cup parmesan cheese grated
- 2 tbsp olive oil
- Salt and pepper to taste
Instructions
- Preheat the oven to 400°F (200°C).
- Season the sea bass fillets with salt and pepper on both sides.
- In a large skillet, heat the olive oil over medium heat. Add the fennel slices and sauté for 5 minutes until slightly softened.
- Pour the heavy cream over the fennel and bring to a simmer. Cook for 5 minutes, stirring occasionally.
- Transfer the fennel mixture to a baking dish and sprinkle the grated Parmesan cheese on top.
- Place the sea bass fillets on top of the fennel gratin.
- Bake in the preheated oven for 20 minutes, or until the fish is cooked through and the cheese is golden and bubbly.
- Serve hot and enjoy!
This recipe is real fancy, lol. I like to keep it simple, but might try it for a special occasion.
Too complicated! I just wanted fish and veg but had to do all this. Nah!
Come on, it’s not that hard! Just follow the steps, it’ll be worth it! 😋
I get what you mean, it looks kinda fancy for a simple fish dish. Sometimes simple is best! 😅
I don’t know about fennel, it tasted like licorice. Maybe trying it with broccoli next time?
This is so easy to make! My family loved it. Thank you!
This is just like my grandma used to make! A little nostalgia with every bite. Loved it!
Baked sea bass? More like Baked Sea Bass of Disappointment! I found it bland. Needs more seasoning!
I totally disagree! I thought it was super flavorful! Maybe you just need to experiment more with spices!
Okay, real talk: fennel + fish is underrated. The creamy gratin vibe is legit. I used half-and-half because I’m cheap, and it still worked.
Hehe, I forgot to take off the skin from the fish… it was crunchy for sure. 😂
How can you bake fish for 20 minutes? That’s ludicrous! Mine would be charcoal! 🥴
Way too much cream! My heart can’t take that! I think less cream would be better, right?