Preheat the Oven: Start by preheating your oven to 350°F (175°C). This ensures your cookies bake evenly.
Mix the Butter and Sugar: In a large mixing bowl, cream the softened butter and powdered sugar together until light and fluffy. This is the key to that melt-in-your-mouth texture!
Combine the Dry Ingredients: Gradually add the flour, cornstarch, and salt to the butter mixture, mixing just until combined. Be careful not to overwork the dough.
Add the Pecans: Fold in the chopped toasted pecans and vanilla extract. Get ready for that nutty aroma to fill your kitchen!
Shape the Cookies: Roll the dough into small balls and place them on a baking sheet lined with parchment paper. Flatten each ball slightly with a fork for that classic cookie look.
Bake: Pop the baking sheet in the oven and bake for 12-15 minutes or until the edges are lightly golden.
Cool and Serve: Let the cookies cool on a wire rack before serving. Enjoy!