Ensure you have a pre-baked (blind baked) pie shell ready for filling
Preheat the oven to 350 degrees F.
In the bowl of a stand mixer or with a hand mixer, cream together the room temperature butter and brown sugar. Mix on medium speed for 1-2 mins
After the butter and sugar are well combined, add in the eggs one at a time. Mix the eggs and butter mixture together until fully incorporated
Add the vanilla bean paste or vanilla extract, dark corn syrup, salt, bourbon (optional), orange zest into the mixer and mix until combined. Set the filling aside
Lay the pecans in an even layer on the bottom of the pre-baked 9” pie shell.
Pour the filling over top. Be sure to only fill until the pie filling is just under the rim. (note: be careful not to overfill the pie as it will puff slightly when it bakes.)
Bake for 50 mins to 1 hour. You will know the pie is done if you shake it and there is just a slight jiggle in the middle of the pie
Remove from oven and cool before topping with the chocolate layer