Follow package instructions on cookie dough for baking temperature. Bake for maximum bake time per package instructions. You want them to be one the crispier side, so they crumble well, so you can bake them for an additional 2-3 minutes if they're still soft at the full baking time. Allow to cool completely.
Preheat oven to 350°F. Add cookies to a food processor and pulse into a fine crumb. Add melted butter and pulse a few times until incorporated.
Press firmly into the pie pan. You can use a glass or bottom of a measuring cup to help press it into place.
Bake 7 minutes and allow to cool fully before filling.