The phrase "to freeze the cookies" means to place the cookies in a very cold environment, usually a freezer, to keep them fresh for a longer period of time.
Sentences with «to freeze the cookies»
Bake frozen cookie dough balls for an extra minute — do not thaw. (ahintofhoney.com)
Let the cookies to cool completely, then freeze cookies for 1 hour. (epicurious.com)
My favorite tips on how to make frozen cookie dough balls. (namelymarly.com)