
Baked Cod with Lentils
Flaky baked cod over a bed of French-style green lentils.
About This Recipe
This French-inspired dish pairs perfectly baked cod fillets with earthy Puy lentils simmered in a light broth with vegetables and Dijon mustard. The combination delivers an exceptional protein punch from both the fish and the lentils, with minimal fat and maximum flavour. It is clean eating that feels like fine dining — elegant, nourishing, and deeply satisfying.
Ingredients
Serves 2
- 2thick cod fillets (180 g each)
- 200 gPuy or green lentils
- 1 mediumcarrot, finely diced
- 1 stalkcelery, finely diced
- 1 smallshallot, finely diced
- 400 mlvegetable or chicken stock
- 1 tbspDijon mustard
- 2 tbspextra-virgin olive oil
- 1 tbspfresh parsley, chopped
- 1 tbsplemon juice
Instructions
- 1
Cook the lentils
Combine lentils, carrot, celery, shallot, and stock in a saucepan. Bring to a boil, then simmer for 20-25 minutes until lentils are tender but still hold their shape. Drain any excess liquid.
- 2
Bake the cod
Place cod fillets on a lined baking tray. Drizzle with 1 tbsp olive oil, season with salt and pepper. Bake at 200 °C (400 °F) for 12-15 minutes until the fish flakes easily.
- 3
Dress the lentils
Stir Dijon mustard, remaining olive oil, lemon juice, and parsley into the warm lentils. Season to taste.
- 4
Serve
Spoon dressed lentils onto plates and place baked cod on top. Finish with a squeeze of lemon.
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Pro Tips
- →
Do not overcook the cod — it should be just opaque and flaky in the centre.
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Puy lentils hold their shape best; avoid red lentils which turn mushy.
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Taste and adjust salt at the very end — flavors concentrate as liquids reduce, and a final pinch of flaky salt sharpens the whole dish.
- →
Mise en place pays for itself: chop, measure and pre-mix everything before the heat goes on, especially for any step that moves fast.
Variations
- •
Use sea bass or hake instead of cod for a different fish option.
- •
Add wilted spinach to the lentils for extra iron and vitamins.
- •
Vegetarian: swap the protein for roasted king oyster mushrooms, smoked tofu or cooked chickpeas — adjust seasoning slightly upward to compensate.
- •
Spicier: add a finely chopped fresh chile or a teaspoon of crushed Aleppo/Urfa pepper to the aromatics for warm, layered heat instead of a single sharp hit.
Storage
Refrigerate lentils up to 4 days. Store fish separately and reheat gently. Fish is best within 1 day.
History & Origin
Baked Cod with Lentils is drawing on classical French technique where method and timing matter as much as ingredients. Regional variations are the rule rather than the exception — neighboring villages, families and even individual cooks adapt the dish to what's in the pantry and what's in season, which is why no two versions taste exactly alike and why the recipe has stayed alive for so long.
Frequently Asked Questions
Can I make this ahead of time?
Yes — most of the components can be prepared up to a day in advance and refrigerated separately. Reheat gently and assemble just before serving so textures stay distinct.
What can I substitute if I don't have all the ingredients?
Stay close to the role each ingredient plays: swap aromatics for similar ones (shallot for onion, lime for lemon), and keep the fat-acid-salt balance intact. Spice blends can usually be approximated with what's in the cupboard.
How do I know it's authentic?
Authenticity sits on a spectrum — what matters more is honoring the technique and balance of flavors. If the dish tastes harmonious and respects how cooks in its home region would build it, you're on solid ground.
Why didn't mine turn out as expected?
The two most common issues are under-seasoning and rushing the heat. Taste as you go, season in layers, and give aromatics and proteins the time they need to develop color and depth before moving on.
Nutrition Facts
Per serving (380g / 13.4 oz) · 2 servings total
Time Summary
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