Preheat your oven to 350°F (175°C) and prepare your baking sheet by lining it with parchment paper.

In a large mixing bowl, combine the softened unsalted butter, brown sugar, and white sugar. Use an electric mixer to cream them together until light and fluffy, about 3-4 minutes.

Crack in the large eggs one at a time, mixing well after each addition until incorporated.

Gradually sift in the all-purpose flour, baking soda, and salt. Fold in gently until just combined.

Gently fold in the chocolate chips, nuts, oats, and any additional mix-ins.

Using a tablespoon or ice cream scoop, drop rounded tablespoons of cookie dough onto the prepared baking sheet, spacing them about 2 inches apart.

Bake for 10-12 minutes until the edges are golden brown and the centers still appear soft.

Once baked, allow the cookies to cool on the baking sheet for about 5 minutes before transferring them to a wire rack.