Heat oven to 200C (180C fan bake), line a tray with baking paper or a baking mat.

Mix sliced peaches, brown sugar, flour, cinnamon, nutmeg, and salt together in a bowl.

Cut pastry sheet into 9 squares, place on tray, brush with egg (if using).

Arrange peach slices on the pastry, about four slices per pastry. Sprinkle sliced almonds on top.

Bake for 15 minutes, turn oven down to 180C (160C fan bake) and bake for a further 10 minutes. You may want to rotate the tray if it is browning unevenly.

Once cooked, cool on the tray for 5 minutes then transfer onto a wire rack.