In a medium size bowl, whisk together the All-Purpose Flour (2 1/4 cup), Salt (1/2 teaspoon), Baking Soda (1 teaspoon) and Corn Starch (2 teaspoon), set aside.
In a large bowl or using a hand electric mixer, cream together the Butter (1 cup), Brown Sugar (1 cup) and Granulated Sugar (1/2 cup) until well blended. You can use a spatula but its much more difficult.
Add the Egg (2) and Vanilla Extract (2 teaspoon). Mix until well incorporated.
Add the flour mixture and mix until it forms a cookie dough. Add Chopped Pecans (1 1/2 cup) and fold them in. Cover the bowl and chill in the fridge for at least 1 hour or up to 4 days.
Use a spoon or small scooper to scoop 1 tablespoon of dough and roll into balls. Place on cookie sheet and repeat with remaining dough.
Preheat oven to 350 degrees F (175 degrees C). Place baking sheets in oven and bake for 11-12 minutes, or until edges are lightly browned.
Remove from oven, (don’t worry if the centers is still soft) and let cool 5 minutes on baking sheet before transferring to wire racks. Let cool completely before serving.