In a large mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy. You can use an electric mixer or whisk for this step.
Beat in the eggs, one at a time, followed by the vanilla extract. Mix until well combined.
In a separate bowl, whisk together the all-purpose flour, baking soda, and salt. Gradually add the dry mixture to the wet ingredients, mixing until just combined.
Stir in your chosen mix-ins, such as chocolate chips, nuts, dried fruits, or candies. Mix until evenly distributed throughout the dough.
Cover the dough and refrigerate for at least 30 minutes. Chilling helps the dough firm up and enhances the flavor.
Preheat your oven to 375°F (190°C) and line baking sheets with parchment paper or silicone baking mats.
Using a cookie scoop or spoon, portion out the dough and place it onto the prepared baking sheets. Leave enough space between each cookie for spreading during baking. Flatten each dough portion slightly with the back of a spoon or your hand.
Bake in the preheated oven for 10-12 minutes, or until the edges are golden brown. The centers may appear slightly underbaked, but they will firm up as the cookies cool.
Remove the cookies from the oven and let them cool on the baking sheets for a few minutes. Transfer them to a cooling rack to cool completely. Enjoy your Bigger Bolder Baking Crazy Cookies with a tall glass of milk or share them with loved ones for a delightful treat.