Add all ingredients except the chocolate chips to a food processor.
Once mostly blended, stop the food processor and use a spatula to scrape down the sides of the bowl.
Blend again, until smooth.
Turn off the food processor, remove blade, and mix in the chocolate chips.
Place the covered food processor bowl in the refrigerator for a minimum of one hour, but up to 48 hours. You can also put the bowl in the freezer for 30-60 minutes, instead.
When the dough is chilled through, remove from refrigerator or freezer and scoop out 1 tablespoon per ball, rolling each into a ball shape.
Keep in a storage container in the refrigerator for up to 5 days, or in the freezer. If layering the balls, use a piece of parchment paper between each layer to prevent sticking.