Preheat oven to 400 degrees.
Prepare your 9 x 13 pan with cooking spray or butter.
Cream butter and sugar.
Add in flour and mix well.
Press dough by hand into prepared 9×13 dish.
Poke a few holes along the crust.
Place butter, corn syrup, salt, and brown sugar into small pot.
Turn heat on medium.
Slowly bring to a boil (stirring to prevent burning).
Let boil for one minute.
Remove from heat and stir in pecans and vanilla extract.
Let cool for 5 minutes.
After 5 minutes mix in eggs.
Pour onto crust.
Bake at 400 degrees for 40-45 minutes.