Copycat Trader Joe's Cookie Butter

In food processor (or blender), process cookies until crumbs. It should almost be a powder consistency. Put in a large bowl and set aside. In a microwave safe bowl, pour in the sweetened condensed milk, evaporated milk, and unsalted butter. Heat for a minute and a half, or until butter has melted. Add the vanilla extract and mix. Pour the liquid over the cookie crumbs and mix with a rubber spatula until there are no dry spots. Put the butter in a Mason jar and store in the refrigerator for up to two weeks.