Preheat oven to 350 degrees F.

Add butter to a stand mixer (or a large bowl) and beat butter for 3-5 minutes, until fluffy and smooth. Add granulated sugar and brown sugar and continue to mix for another 1-2 minutes. Cut open vanilla bean pods and scrape out vanilla beans and add to butter/sugar mixture. Add egg and egg yolk and mix for another minute, scraping down the sides where needed.

In a separate bowl, combine flour, salt, baking soda, baking powder, cornstarch, and roughly chopped pecans. Whisk together until combined. Add to wet ingredients and mix gently for another 30 seconds. Dough may be crumbly, press together and mix with your hands if needed.

Spoon out 1 ½ - 2 tbsp size cookies and roll into a ball. Roll the sugar in sugar and add to a parchment lined baking sheet. (This recipe yields about 24 cookies so split cookies between two baking sheet if baking at the same time).

Bake cookies for 10-12 minutes and allow to cool.