Begin by slicing very thinly 4 cups of apples. This only bakes for 15 min and thick apples won't get done.
Mix with sugar, cinnamon and corn starch (sub flour if you don't have any).
Mound on a room temperature boxed pie crust.
Fold in edges, brush crust with water, sprinkle sugar on edges and bake.
Enjoy! You can find the complete recipeHere