Seafood Gratin with Mushrooms: A Rich and Creamy Delight

Introduction:
Indulge in this decadent Seafood Gratin with Mushrooms, a dish that combines succulent shrimp, delicate white fish, and earthy mushrooms in a rich, creamy sauce, topped with a crispy, golden breadcrumb crust. Perfect for a comforting dinner or a special occasion, this gratin is as elegant as it is delicious!

Ingredients:

For the seafood filling:

200g (7 oz) shrimp, peeled and deveined 🦐
200g (7 oz) white fish fillet, cut into chunks 🐟
1 cup mushrooms, sliced 🍄
2 tablespoons butter 🧈
2 cloves garlic, minced 🧄
½ teaspoon salt 🧂
¼ teaspoon black pepper 🧂
1 teaspoon lemon juice 🍋
For the creamy gratin sauce:

2 tablespoons butter 🧈
2 tablespoons all-purpose flour 🍞
1 cup milk 🥛
½ cup heavy cream 🥛
½ teaspoon Dijon mustard 🌿
¼ teaspoon nutmeg (optional) 🌿
½ cup shredded Gruyère or Parmesan cheese 🧀
For the topping:

½ cup breadcrumbs 🍞
¼ cup shredded cheese 🧀
1 tablespoon olive oil 🫒
1 tablespoon fresh parsley, chopped 🌿
How to Make:

Sauté the seafood and mushrooms: