Here’s a detailed recipe for Seafood Gratin with Mushrooms—rich, creamy, and golden on top. I’ll include a clear step-by-step guide.
Ingredients (Serves 4)
For the seafood:
- 200g (7 oz) shrimp, peeled and deveined
- 200g (7 oz) scallops
- 150g (5 oz) white fish fillet (like cod or haddock), cut into bite-sized pieces
For the gratin:
- 200g (7 oz) mushrooms, sliced (button, cremini, or a mix)
- 1 small onion, finely chopped
- 2 cloves garlic, minced
- 2 tbsp butter
- 2 tbsp olive oil
- 2 tbsp all-purpose flour
- 1 cup (240 ml) milk
- 1/2 cup (120 ml) heavy cream
- 1/2 cup (50 g) grated Gruyère or Parmesan cheese
- Salt and black pepper, to taste
- Pinch of nutmeg (optional)
- 1 tbsp fresh parsley, chopped (for garnish)
- 1/4 cup breadcrumbs (optional, for extra crunch)
Instructions
1. Preheat the oven
- Preheat to 200°C (400°F).
- Butter a small baking dish or lightly grease with olive oil.
2. Cook the mushrooms
- Heat butter + olive oil in a skillet over medium heat.
- Add onions and cook until translucent (~3–4 minutes).
- Add garlic and mushrooms, sauté until mushrooms release moisture and start to brown (~5–6 minutes).
- Season lightly with salt and pepper. Remove from heat and set aside.
3. Prepare the creamy sauce
- In a small saucepan, melt 2 tbsp butter over medium heat.
- Stir in 2 tbsp flour to make a roux, cooking 1–2 minutes.
- Gradually whisk in milk and cream until smooth and thickened (~3–5 minutes).
- Season with salt, pepper, and a pinch of nutmeg.
- Stir in half the cheese, then fold in the cooked mushrooms and onions.
4. Assemble the gratin
- Spread the seafood evenly in the prepared baking dish.
- Pour the mushroom-cream mixture over the seafood.
- Sprinkle the remaining cheese on top.
- Optionally, add breadcrumbs for a golden crust.
5. Bake
- Bake in the oven for 15–20 minutes, or until the top is golden and the seafood is cooked through.
- (Shrimp should turn pink, scallops opaque, and fish flaky.)
6. Serve
- Garnish with chopped parsley.
- Serve immediately with crusty bread, rice, or a light salad.
✅ Tips for success:
- Avoid overcooking seafood; it continues cooking in the oven.
- Use a mix of seafood for more flavor and texture.
- Mushrooms like shiitake or porcini can add an earthy depth.
If you want, I can also give a lighter, white wine version that makes it extra fragrant and restaurant-style without heavy cream.
Do you want me to do that?
