Easy apple turnovers

A bumper harvest of apples has been recorded this autumn, thanks to the weeks of hot weather in summer. Our apple trees were groaning under the weight of apples. I've been giving them away left and right, and using every day, mainly baking.
I have also put lots of apples in wooden and cardboard trays, and will keep in the cold summerhouse. Hopefully they will last long. Last year I still had some of our apples back in spring.

A friend was coming to our house earlier today, and I decided to make a quick batch of apple turnovers. I had a pack of Jus-Rol puff pastry in the fridge.
Having watched the pastry weeks on GBBO through the years, I arrived to a conclusion that life is too short to make your own puff pastry. It's tedious and laborious, and Jus-Rol works perfectly every time.
However, if you prefer to make your own pastry, I am full of admiration and awe, I truly am.

Apple Turnovers
Ingredients:
3 medium apples, peeled, cored, quartered and sliced
25g butter
2tsp Waitrose Christmas ground spices (mix of cinnamon, ginger, nutmeg, cardamom, allspice, star anise, black pepper, tangerine oil, cloves\0
125g caster sugar
2tsp cornflour+ 2 tsp cold water
320g puff pastry, ready to roll
1 medium egg yolk, beaten with a dash of water

In a medium frying pan, melt the butter and add peeled, cored, quartered and sliced apples. Add the spices and cook, stirring occasionally, for 5 minutes. Add sugar, mix well, cook on low for another 5 minutes. In a small cup mix 2tsp of cornflour with 2-3 tsp of cold water until you reach a runny consistency. Pour the cornflour to the apple filling mix, stir in, cook for a minute.
Let it cool before making turnovers.

If using a ready made pastry, roll it out on the parchment paper it has been wrapped in. Cut in half horizontally, then into three or four squares each, so you get six or  eight pieces of pastry.
Beat the egg yolk with a bit of cold water, brush each pastry square with the egg wash. Spoon a heaped tablespoon of apple filling onto each square.

What do you do with a glut of apples? Chutneys? Apple butter? Jelly?

Adding this recipe post to #KitchenClearout linky run by Cheryl at Madhouse Family Reviews, as I used apples from the garden and almost finished  Signature spice (just 1tsp left now).