1.Preheat oven to 350 degrees. On a floured surface roll out pie crust to 13 inches. Place into 9-inch pie pan and crimp the edges. Prick the pie crust with a fork and bake it for 8 minutes.
2.Meanwhile, in a large bowl whisk vigorously the eggs and brown sugar. Add flour, corn syrup, butter, bourbon, salt, and vanilla then whisk again.
3.Remove crust from oven then add in the egg mixture. Bake for 35-40 minutes or until the top is brown and center is set. It can be slightly jiggly in about a 2-inch circle in the center.
4.Cool pie completely before cutting and serving.