Preheat oven to 425°F (220°C). Grease a 9x13 casserole dish with non-stick spray.
Roll one pie crust into a rectangle and place it in the dish. It should cover the bottom but doesn’t need to go up the sides.
In a bowl, whisk together brown sugar, melted butter, corn syrup, vanilla, and beaten eggs until smooth. Stir in chopped pecans.
Pour half the filling over the crust.
Roll out the second pie crust and place it over the filling. Brush with 1 tablespoon melted butter.
Bake for 15 minutes, or until lightly golden. Remove from oven and reduce heat to 350°F (175°C).
Stir the remaining pecan mixture, then pour over the baked crust. Arrange pecan halves on top.
Bake for 30 minutes until the cobbler is set.
Allow to cool for 1 hour before serving. Optionally, top with ice cream or whipped cream.