In a large bowl, mix 1 cup flour and salt. Cut in cold butter until crumbly. Gradually add ice water to form dough. Wrap in plastic wrap and chill for at least an hour.

In a separate bowl, combine cherries, sugar, remaining flour, lemon juice, and vanilla extract. Let sit for about 15 minutes.

Divide chilled dough into two portions (one slightly larger). Roll out each on a floured surface to about 1/8 inch thick; place the larger piece in a pie dish.

Pour cherry filling into the crust. Roll out the second piece, cut into strips, and weave a lattice pattern over the filling.

Preheat oven to 425°F (220°C). Brush lattice with egg wash and bake for 45-50 minutes until golden brown.

Allow cooling for at least one hour before slicing. Serve with whipped cream or vanilla ice cream.