1. Melt chocolate chips over a double boiler, stirring until smooth; remove from heat.

2. Add cookie crumbs, powdered sugar, bourbon, and sweetened condensed milk.

3. Stir until well combined.

4. Cover; refrigerate for about 45 minutes.

5. Using 1 tbsp dough at a time, roll the mixture in your hands to create smooth, round balls.

6. Stir in an air-tight container at room temperature for 24 hours to allow flavors to combine.

7. Optionally, before serving, roll the balls in sugar to coat.