Preheat oven to 450°.
Cream butter.
Add brown sugar and syrup.
Add well beaten eggs, pecans, and vanilla extract.
Mix in pecans, salt, and flour
Pour mixture into unbaked pie shell.
Bake at 450° for first 15 minutes.
Bake at 350°F for remaining 30 minutes until crust is golden brown. Shield once crust is lightly browned for any remaining time.