Preheat oven to 350 degrees.
In a stand mixer, beat together cake mix, melted butter, and 2 eggs.
Spray the bottom of a 9x13 baking dish.
Press the cake mixture into the bottom of the baking dish. Making sure to press up the sides a tiny bit to make a crust edge.
(Tip: wet your fingers as you press the cake mixture in the bottom and you can get an even spread)
Wash out the mixing bowl.
In a stand mixer, beat together the cream cheese, vanilla, and 2 eggs.
Slowly mix in the powdered sugar.
Remove the bowl from the mixer and hand stir in 3/4th of the roughly chopped cookies and candies, saving the M&M’s and sprinkles for the end.
Pour cream cheese mixture on top of the crust.
Cook for 30-40 minutes or until cream cheese mixture is set and edges are browning.
Remove from oven and scatter top with remaining cookies, candy, M&M’s and festive sprinkles.
Press candies in a little and candies will melt into the topping.
Let cool before serving.
Store in an airtight container.