In a medium bowl, combine the rolled oats, pumpkin puree, peanut butter, honey, vanilla extract, cinnamon, nutmeg, ginger, and cloves. Stir until well combined.
If using, stir in the chocolate chips.
Roll the mixture into bite-sized balls (about 1 inch in diameter).
Place the energy bites on a baking sheet lined with parchment paper and refrigerate for at least 30 minutes to firm up.
Store in an airtight container in the refrigerator.
Notes
These energy bites are best stored in the refrigerator and will keep for up to a week.