Preheat the oven to 350°F (175°C).

In a mixing bowl, cream together the butter, sugar, and brown sugar until smooth.

Beat in the eggs one at a time, then stir in the ube extract.

In another bowl, combine the flour, baking soda, and salt.

Gradually add the dry ingredients to the wet mixture, mixing until just combined.

Fold in the crushed cookies.

Drop spoonfuls of dough onto a baking sheet.

Bake for 10-12 minutes or until edges are lightly golden.

Allow to cool before serving.