On a lightly floured surface, roll out the dough into a large round circle leaving the dough about a 1/4” thick. The circle should be at least 14” round. You can make smaller ones if you want
Transfer the dough to the pan.
Place the pie filling in the center of the dough spreading it outwards leaving a 2-3” border. You can mound it up in the middle if you want.
Gently fold the dough over the filling, pleating loosely and pinching to seal any cracks in the dough. You want the center to be exposed.
Brush the dough with milk.
Sprinkle liberally with coarse sanding sugar.
Bake for 30-35 minutes or until the crust is golden brown.