2 cups all-purpose flour
1 cup confectioners' sugar, plus more for dusting
Pinch salt
3 sticks butter, at room temperature, plus more for pan
8 cups cored, peeled and chopped Granny Smith apples (about 5 large)
1 cup granulated sugar
1/2 teaspoon ground cinnamon
1 tablespoon fresh lemon juice
1 package unflavored gelatin
3 tablespoons cold apple juice
Vanilla ice cream
Cinnamon Whipped Cream, recipe follows
1 cup heavy whipping cream
1/4 cup confectioners' sugar
1/2 teaspoon ground cinnamon
Add water 1 tablespoon at a time if the dough is too dry.