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Puff Pastry Chicken and Leek Casserole

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This Puff Pastry Chicken and Leek Casserole is a comforting and flavorful dish, combining tender shredded chicken, savory leeks, and a rich creamy sauce, all topped with a flaky, golden puff pastry crust. It’s a versatile and easy-to-make casserole that’s perfect for any season, offering the perfect balance of creamy and crispy textures in every bite. Great for making ahead and ideal for family dinners or gatherings!

Ingredients

  • 2 tablespoons olive oil
  • 2 tablespoons butter
  • 1 onion, chopped
  • 3 leeks, cleaned and sliced
  • 3 cloves garlic, minced
  • 2 cups cooked chicken, shredded
  • 1/4 cup all-purpose flour
  • 2 cups chicken broth
  • 1/2 cup heavy cream
  • 1 teaspoon thyme
  • Salt and pepper to taste
  • 1 sheet puff pastry, thawed
  • 1 egg (for egg wash)

Instructions

  • Preheat your oven to 375°F (190°C).
  • In a large skillet, heat olive oil and butter over medium heat. Add the onion, leeks, and garlic, and sauté for about 5 minutes until softened.
  • Stir in the flour and cook for 1-2 minutes to form a roux.
  • Gradually add chicken broth while stirring, followed by the heavy cream, thyme, salt, and pepper. Continue to stir until the sauce thickens (about 5 minutes).
  • Add the shredded chicken and stir to combine. Remove from heat.
  • Transfer the mixture to a baking dish and spread evenly.
  • Roll out the puff pastry and place over the filling. Trim excess edges and seal the seams.
  • Beat the egg and brush it over the puff pastry.
  • Bake for 25-30 minutes, until the puff pastry is golden brown and crisp.
  • Let it cool for a few minutes before serving.

Notes

  • For a richer filling, you can add cheese or extra herbs for more flavor.
  • If using store-bought rotisserie chicken, this dish becomes even quicker to prepare.