Mix the flour and salt in a large mixing bowl.
Add the milk and oil; mix a fork. roll in into a ball then flatten with the palm of your hands.
Place over parchment papper and roll the dough into a round pie layer about 1/4 inch thick.
Place dough over the top of pie pan. Trim the edges that extend outside the pan with a knife.
Preheat oven to 350F degree.
In a bowl, add the sugar, eggs, butter, corn syrup, vanilla extra, and cinnamon; mix well.
Add 1/2 cup chopped pecans to the bowl.
Pour the filling into the pie and evenly distribute.
Bake for 20 minutes.
Top the pie with whole pecans in a circle to decorate the pie. Bake for another 20-25 minutes or until the pie is golden on top.
Cool before serving.