This Keto Baked Fish with Cheesy Crust is the kind of recipe that proves low-carb cooking doesn’t have to be complicated or boring. Tender, flaky fish paired with a golden, cheesy topping creates a satisfying contrast of textures — soft and juicy inside, lightly crisp on top. It’s a perfect solution for busy weeknights when you want something nutritious, comforting, and fast, without standing over the stove. The ingredient list is short, the prep is minimal, and the flavor payoff is huge. Whether you choose mild white fish or rich salmon, this oven-baked keto recipe delivers a restaurant-style result with only 1–2 g net carbs per serving. Simple, filling, and family-friendly.
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- Servings: 4
- Prep time: 10 min
- Cook time: 15–20 min
- Total time: 25–30 min
- Category: Main Dishes
- Cuisine: Keto / Low Carb
- Method: Oven-Baked
- Diet: Gluten-Free, Keto
Ingredients for Keto Baked Fish
- 600–700 g white fish fillet or salmon
- 100 g shredded cheese (cheddar, gouda, parmesan, or mix)
- 1 egg
- 1 tsp Dijon mustard (sugar-free)
- 1 tbsp olive oil or butter
- Salt and pepper to taste
- ½ tsp paprika or Italian herbs
Instructions
- Prep the Fish: Preheat your oven to 200°C (390°F). Line a baking tray with parchment paper or lightly grease it with olive oil or butter. Pat the fish fillets completely dry using paper towels — this is important to help the cheesy crust adhere and brown properly. Season both sides of the fish generously with salt and black pepper. Arrange the fillets on the prepared tray, leaving a little space between each piece so they bake evenly.
- Make the Cheesy Topping: In a medium bowl, whisk the egg until smooth. Add the shredded cheese, Dijon mustard, paprika or Italian herbs, and mix well until you get a thick, spoonable mixture. The consistency should be creamy but not runny — it needs to stay on top of the fish without sliding off. If desired, you can add a pinch of garlic powder or a little lemon zest for extra aroma without increasing carbs.
- Assemble the Dish: Using a spoon, evenly distribute the cheese mixture over each fish fillet. Gently spread it to cover the surface, creating a thick layer that will melt and form a golden crust as it bakes. Press lightly so it sticks to the fish.
- Bake: Place the tray in the oven and bake for 15–20 minutes, depending on the thickness of the fillets. The fish should be opaque and flaky, and the cheese topping should be melted and lightly golden. For extra crispiness, switch the oven to grill mode for the last 2–3 minutes, watching closely to avoid burning.
📊 Nutrition Facts (per serving, est.)
| Calories | Fat | Protein | Net Carbs |
|---|---|---|---|
| ≈ 380–420 kcal | ≈ 28–30 g | ≈ 35 g | ≈ 1–2 g |
💡 Tips & Variations
- Salmon adds a richer flavor and slightly higher fat content, increasing calories by about +40–50 kcal per serving compared to white fish.
- Mixing cheeses (cheddar + parmesan) creates a deeper, more complex crust.
- Fresh herbs like dill or parsley add brightness without affecting macros.
- For extra crunch, sprinkle a small amount of almond flour on top (~10 g adds ≈60 kcal total).
- Avoid very watery fish — excess moisture can prevent browning.
Storage & Meal Prep 🧊
- Store leftovers in an airtight container in the refrigerator for up to 3 days.
- For best texture, reheat in the oven or air fryer at low heat to keep the cheesy crust crisp.
- Microwaving works but may soften the topping.
- Freezing is not recommended, as the cheese and fish texture can become watery once thawed.
What to Serve With 🥗
- Cauliflower mash
- Zoodles with butter
- Fresh keto-friendly salad
FAQ
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Keywords
keto fish recipe, baked fish low carb, cheesy crust fish, oven keto seafood
