Preheat oven to 350 degrees and spray a 9in a round cake pan with pam baking spray, set aside
Using a large bowl, whisk together the flour, baking soda, and salt
Using a large bowl, beat the butter, sugar, and brown sugar until light and fluffy
Beat in the eggs and vanilla until combined
Gradually beat in the dry ingredients until combined and a dough forms
Fold in 1 ½ C chocolate chips, 1 ½ C chopped Oreos, and ¾ C rainbow sprinkles
Press the cookie dough into the cake pan
Sprinkle the remaining chocolate chips, chopped Oreos, and rainbow sprinkles on top
Bake in the oven for 25-30 minutes or until the edges are set and start to turn a light golden brown
Remove from oven and allow to cool completely