Start by preheating your oven to 350°F (175°C). Line a baking sheet with parchment paper to prevent the cookies from sticking and ensure even baking.

In a medium bowl, whisk together the flour, baking soda, and salt. This step helps to evenly distribute the dry ingredients and ensures the cookies will rise properly.

In a large mixing bowl, cream together the softened butter, brown sugar, and granulated sugar using a hand mixer or stand mixer. Beat on medium speed until the mixture is light and fluffy, about 2-3 minutes. This step is essential for achieving a soft and chewy texture.

Next, add the eggs one at a time, beating well after each addition. Then, add the vanilla extract and mix until incorporated.

Gradually add the dry ingredients to the wet mixture, mixing on low speed. Once everything is combined, be careful not to overmix the dough, as this can result in tough cookies.

Stir in the chocolate chips and chopped walnuts (if using). Make sure the chocolate is evenly distributed throughout the dough.

Using a cookie scoop or tablespoon, drop rounded scoops of dough onto the prepared baking sheet, spacing them about 2 inches apart. Bake for 10-12 minutes, or until the edges are golden brown but the centers are still soft. Remember, the cookies will continue to cook on the baking sheet once you remove them from the oven, so don’t overbake them.

Allow the cookies to cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely. Then, grab a glass of milk, sit back, and enjoy these delicious homemade cookies!