Preheat the oven to 350 F and line cookie sheet parchment paper.

Beat the cold butter and both sugars in a stand mixer on medium speed with a towel over for cover- it will get messy if you don’t. Let mix until fluffy, about 5 minutes.

Add egg yolks and vanilla extract and mix on low for 30 seconds. Mix in flour, salt, and baking soda until just combined.

Using a medium cookie scoop, scoop the dough balls on a cookie sheet about 2 inches apart- both next to each other and on top of each other. There should be 6-8 balls of dough on the cookie sheet.

Bake for 12-14 minutes and let cool on a cookie sheet for 5-10 minutes. Transfer the cookies to a cooling rack or enjoy!