Step 1: Preheat your oven to 375°F (190°C). Line two baking sheets with parchment paper or silicone baking mats.
Step 2: In a large bowl, cream together the softened butter, granulated sugar, and brown sugar with an electric mixer until light and fluffy, about 2-3 minutes. Scrape down the sides of the bowl as needed.
Step 3: Beat in the eggs one at a time, mixing well after each addition. Stir in the vanilla extract until just combined.
Step 4: In a separate medium bowl, whisk together the all-purpose flour, baking soda, and salt.
Step 5: Gradually add the dry ingredients to the wet ingredients, mixing on low speed until just combined. Be careful not to overmix the dough.
Step 6: Fold in the chocolate chips (or chunks) with a rubber spatula until evenly distributed throughout the dough.
Step 7: Drop rounded tablespoons of dough (or use a 1.5-inch cookie scoop) onto the prepared baking sheets, spacing them about 2 inches apart.
Step 8: Bake for 9-12 minutes, or until the edges are golden brown and the centers are still slightly soft and set. The exact time will depend on your oven and desired cookie texture.
Step 9: Let the cookies cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely. Enjoy your perfect chocolate chip cookies!