01 - Place the chocolate cookies in a food processor and pulse until you have coarse crumbs. Alternatively, place cookies in a resealable plastic bag and crush with a rolling pin.
02 - Transfer the crumbs to a bowl. Pour in the melted butter and mix until the crumbs are evenly coated and resemble wet sand.
03 - Stir in any optional add-ins, such as chopped chocolate or nuts, if desired.
04 - Sprinkle generously over your favorite desserts such as ice cream, yogurt, pies, or puddings. Store any leftover crumble in an airtight container at room temperature for up to 3 days.