PASTRY CRUST

Combine the flour and salt. Slice the butter into small cubes and combine it with the flour using a pastry cutter or fork until it appears crumbly.

In a separate bowl, whisk together the egg, water, and vinegar.

Mix the wet ingredients and flour together until just combined. If the dough is too dry, add a little water just until it begins to clump together. Wrap the dough in plastic wrap and refrigerate it for at least 30 minutes.

Peel and cut the apples into thin slices that are 1/4 inch thick. Place the slices into a bowl and toss them with the brown sugar, corn starch, and cinnamon until well coated.