Begin by crushing the Oreo cookies into fine crumbs. This should take about 5 minutes.

Let the cream cheese soften to room temperature for about 30 minutes or microwave for 10-15 seconds.

In a bowl, combine the softened cream cheese with the crushed Oreo cookies until smooth, about 2-3 minutes.

Gradually add protein powder, stirring continuously, and add milk if the mixture feels too dry.

Add the vanilla extract and salt, stirring well. Fold in any optional mix-ins.

Roll portions of the mixture into balls, about 1 inch in diameter.

Chill the rolled protein balls in the refrigerator for at least 1 hour.

If desired, roll chilled balls in additional crushed Oreos or cocoa powder for coating.