Mix all ingredients in a bowl until well-combined.
Cover with plastic wrap and chill in the refrigerator for at least 30 minutes.
Once done chilling, roll into approximately 1 inch (2.5 cm) balls. (Cover hands in a light layer of butter or oil to facilitate rolling and avoid getting sticky hands.)
Lay out a thin layer of oats and chocolate chips on a cutting board or work surface and roll the balls in the mixture. Finish off by rolling each ball between your hands to pack in the oats and chocolate chips.