01 - In a large mixing bowl, combine the oats, protein powder, chia seeds, cinnamon, nutmeg, and salt. Mix thoroughly to ensure even distribution of spices and seeds.
02 - Add the pumpkin puree, almond butter, maple syrup, and vanilla extract to the dry mixture. Stir vigorously until a thick, cohesive dough forms throughout the bowl.
03 - Fold in chocolate chips and nuts if desired, distributing them evenly throughout the dough.
04 - Using your hands or a small cookie scoop, roll the mixture into 12 evenly sized balls, applying gentle pressure to maintain shape.
05 - Arrange the balls on a parchment-lined tray and refrigerate for at least 30 minutes until firm to the touch.
06 - Transfer to an airtight container and store in the refrigerator for up to one week, or freeze for up to three months.