Preheat the oven to 375 degrees. Line a pizza pan with parchment paper.
In a mixing bowl, cream the butter and sugars. Add the eggs, beating well after the addition of each.
In another bowl, combine the flour, baking soda, and salt and mix with a whisk.
Add to the flour mixture to the butter mixture, and then add the vanilla.
Fold in the chocolate chips.
Spread across the bottom of the pizza pan and bake until the edges are golden and the cookie is set but the center is still slightly soft, 20 to 25 minutes.
Cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.
Decorate the cookie as you wish. I used icing, you may also want to try candy, sprinkles, powdered sugar, smaller cookies...
Enjoy!
Recipe by The Geeky Hostess at https://geekyhostess.com/cookie-cake/