In a medium bowl, add the peeled and sliced apples thinly. Add the sugar and cinnamon and toss well. Set aside.
Grease a rimmed cookie sheet or line with parchment paper.
On a lightly floured surface lightly roll your pie crust to approximately 14 inches in diameter. Transfer the pie dough to the parchment paper or rimmed cookie sheet.
Pile the apples into the center of the crust, leaving a 3-inch border.
Fold the edges of the crust up around the apples.
Bake 18-20 minutes until the crust is golden.
Cool at least 10 minutes before serving. It's also really good at room temp or cold.