Mix until well combined. If the mixture is too sticky, add more oats, one tablespoon at a time. If too dry, add a little more pumpkin puree or sweetener.
Roll the mixture into small balls, about 1 inch in diameter.
Place the energy balls on a baking sheet lined with parchment paper.
Refrigerate for at least 30 minutes to firm up.
Notes
Store in an airtight container in the refrigerator for up to 1 week.
For longer storage, freeze the energy balls for up to 3 months.
These are great for meal planning and kid-friendly treats.