Kangaroo Pie ( Actually, Fish in Pastry, With a Cheese Sauce!)

I'm posting this recipe for ZWT5. it comes from a lovely cookbook "Dine Around The World", a gift from a friend many years ago. From the book :" One hundred years ago, a Hungarian lady brought recipes to Sydney, but nobody could understand their Hungarian names. So this roll was called Kangaroo Pie, because filling it reminded people of a kangaroo filling its pouch." It doesn't specify the fish to use, but I would use hake, cod, tilapia, or similar.

• Ready In: 55 mins
• Serves: 4

Ingredients

• 300  g frozen puff pastry
• 500  g  fish fillets, cooked and skinned
• 100  g  pickled  gherkins, finely chopped
• 1  medium onion, finely chopped
•  salt and pepper
• 1  tablespoon  finely chopped parsley
• 1  tablespoon butter
• 1  egg, beaten

• Cheese sauce

• 40  g butter
• 2  tablespoons flour
• 1  cup  cream
• 100  g cheddar cheese
• 1  cup milk (optional)
• 1⁄8 teaspoon cayenne pepper
•  salt and pepper
•  parsley sprig

Directions

1. Pre-heat oven to 220C/425°F.
2. Defrost puff pastry and roll out to a rectangle, about 12 x 14 inches.
3. Cube cooked fish fillets, mix gently with chopped gherkins and onion, spread on pastry and season to taste with salt and pepper.
4. Sprinkle parsley on top and roll up firmly.
5. Place roll in a buttered dish, brush with beaten egg and and bake in pre-heated oven at 220C/425F for 15 minutes.
6. Reduce the heat slightly and bake for another 15 minutes, until pastry is golden-brown.
7. Sauce:.
8. In a small saucepan, heat butter, stir in flour gradually, after a minute gradually add cream, stirring constantly, and bring to boil.
9. Remove from heat, add grated cheese and stir until it has melted.
10. If you prefer a thinner sauce, whisk in the milk.
11. Season to taste with cayenne pepper, salt and pepper.
12. Arrange roll on heated platter, garnish with parsley and serve with cheese sauce.
13. A mixed salad goes well with this.