1. Crush the entire package of Oreos. A food processor would work great for this - I don't have one, so I just placed my cookies in a gallon sized Ziplock bag and crushed them with a rolling pin. When the cookies are fine crumbs, transfer them to a large bowl and mix in 6 tablespoons of melted butter. Press the cookie mixture into a 9x13 pan and refrigerate while you prepare the remaining layers.
2. Next, beat together 1 cup of powdered sugar, the cream cheese, and 1 cup of Cool Whip. Spread over your cookie layer.
For the next layer, mix together the pudding mix, milk, and another 1 cup of Cool Whip. Spread over the cream cheese layer.
4. Layer the sliced strawberries on top, and spread the remaining Cool Whip on top.
5. Keep refrigerated until ready to serve.