In a ziplock bag, add 15-20 oreos and crush with a rolling pin. Place 1-2 tablespoons of crushed oreos in a mini mason jar.
In a medium sized bowl, add cream cheese and beat until light and fluffy. Add at least half of a can of condensed milk or sweeten to your taste. The leftover oreos, break into pieces and add into the filling and mix.
Place cream cheese filling in piping bag and pipe into the jar.
Garnish with oreos and refrigerate for at least 30 minutes. Best served chilled.