Instructions:
1️⃣ Preheat oven to 410°F (210°C). Line baking sheets with parchment paper.
2️⃣ In a large bowl, cream together the cold butter, granulated sugar, and brown sugar until well combined.
3️⃣ Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
4️⃣ In a separate bowl, whisk together the flour, cornstarch, baking powder, baking soda, and salt.
5️⃣ Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
6️⃣ Fold in the chocolate chips and nuts (if using) until evenly distributed.
7️⃣ Using an ice cream scoop or your hands, form dough into large balls (about 6 oz each) and place them on the prepared baking sheets.
8️⃣ Bake in the preheated oven for 10-12 minutes, or until the edges are golden but the centers are still soft.
9️⃣ Let the cookies cool on the baking sheets for 10 minutes before transferring to a wire rack to cool completely. Enjoy!
