Get out and measure all of your ingredients.
Preheat your oven to 425 degrees. Prepare a large rimmed baking sheet with cooking spray and set aside.
At your workstation, lightly flour your surface.
Roll your puff pastry out into a 12-14 inch square, as thin as you can, about 1/16-inch thick.
Using a ruler if necessary to cut pastry into squares.
We usually aim for squares that are between 3 and 4 inches.
Transfer your squares on to your prepared sheet.
Now you have to try and arrange your apple slices in a a tight circle or flower from each apple half on top of each pastry round.
Combine your sugar and cinnamon in a small bowl.
Sprinkle 1 tablespoon of the sugar mixture evenly over top of each tart.
Dot each evenly with about 1 teaspoon of butter.
Bake your tarts until browned around the edges, between 16 to 20 minutes.
Serve immediately.
Plain or serve with ice cream, whipped cream and/or caramel sauce.
Enjoy every bite.