I got a big container of Oreo cookie crumbs from work when we stopped using them, and this was one of the recipes I came up with to use up the box.
3 cups Oreo cookie crumbs
1 cup powdered sugar
1/3 cup cream liqueur (like Amarula or Bailey's Irish Cream)
2 tablespoons light corn syrup
cocoa powder, for coating
Mix all ingredients into a large bowl.
Roll into one inch balls.
Coat with cocoa powder.
Chill for several hours or over night.