In a mixing bowl, combine flour, salt, and sugar. Cut in butter until mixture resembles coarse crumbs. Stir in ice water until dough forms.

Divide dough in half, shape into discs, wrap in plastic, and refrigerate for at least 30 minutes.

In a large bowl, mix sliced peaches, sugar, cornstarch, vanilla extract, and lemon juice until well combined.

Preheat the oven to 375°F (190°C). Roll out one disc of dough and fit into the baking dish. Fill with peach mixture.

Roll out the second disc of dough and place over the filling. Cut slits for steam to escape.

Bake for 45 minutes or until crust is golden brown and filling is bubbly.