Remove the pits from dates. If dates are too dry, soak them in hot water for several minutes. When the dates are softened, drain them and place in food processor. Save the water.
In a food processor, combine dates, oats and walnuts or pecans and pulse few times so nuts are chopped finely into small pieces.
Add the rest of the ingredients until well combined. Add more pumpkin puree (or water) if the mixture looks dry.
Take about 1 heaping teaspoon of mixture and form them into a ball. Continue with rest of the mix. Roll the balls in coconut sugar (if desired).
Store energy balls in an airtight container in the refrigerator for up to one week.
You can freeze the balls for up to six months.
Notes
As a measure, I used US cup (240ml). *For gluten-free option use certified GLUTEN-FREE oats.