Break biscuits and cookies into a small pieces.
In a food processor or a blender, pulse cookies and biscuits to a crumble. This is 1 cup of crumbs.
Coarsely grind almonds or add to cookie crumb and pulse for few seconds for a coarse texture.
To cookie crumbs add condensed milk, oil, milk and process until mixture comes together to form a thick lump.
Transfer to a bowl and shape into small balls.
Roll in crumbled, blanched sliced almonds.
Refrigerate for ½ - 1 hour for cookie balls to firm. This is optional.
Store cookie balls in an airtight container in the refrigerator.