Prepare the pastry

• Preheat the oven to 175 °C.
• Roll out the puff pastry sheets and cut them into squares large enough to line the muffin cups.

Fill the pies

• Press each pastry square into the muffin pan.
• Spoon the apple pie filling into each cup.

Close and brush

• Top each pie with another pastry square and seal the edges.
• Brush the tops with melted butter and sprinkle with cinnamon sugar.

Bake

• Bake until golden and crisp.