Prepare cookie dough by creaming butter and sugar together, add in vanilla, a couple tablespoons of milk, some salt and some flour.
Check consistency, and add more milk if needed for a cookie dough consistency.
Stir in chocolate chips.
Divide cookie dough in half, and in a 8 x 8 pan, lined with parchment paper, press half the cookie dough into a even layer.
Put the Klondike bars in the center, there should be some room around the edges
Take the remainder of the cookie dough, and layer it on top and press it down the sides so the Klondike bars are completely incased.
Spread whipped topping generously over the top
Return to the freezer for 15-30 minutes
Remove from freezer, slice and enjoy!