Step 1: Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper.

Step 2: In a large mixing bowl, cream together softened unsalted butter, granulated sugar, and brown sugar using an electric mixer.

Step 3: Add eggs one at a time, mixing well after each addition until fluffy.

Step 4: Whisk together all-purpose flour, baking soda, and salt in a separate bowl.

Step 5: Gradually mix the dry ingredients into the wet mixture until just combined.

Step 6: Fold in the chocolate chips and any optional ingredients.

Step 7: Drop rounded balls of dough onto the baking sheets and bake for 10-12 minutes.

Step 8: Let the cookies cool on the sheets for 5 minutes before transferring to a wire rack.