Heat oven to 425º F. Lightly grease a 13" x 9" glass baking dish.
Remove one pie crust from package and roll out to fit the baking dish. Trim edges.
In a large bowl, combine corn syrup, brown sugar, butter, vanilla and eggs. Whisk until well combined. Stir in chopped pecans.Spoon half of filling into crust.
Remove the second crust from the package, and roll out to fit baking dish. Lightly spray with cooking spray.
Bake 14-16 minutes or until browned. Remove from oven.
Reduce oven temp. to 350º and carefully spoon remaining pecan filling over crust. Arrange the pecan halves over the top and bake 30 minutes or until the center is set. Let cool for 15-20 minutes.
Serve with vanilla ice cream.
If the cobbler has not set in the middle at the end of the recommended cooking time, cook it a little longer until it is set. Let cool a little before serving.