Peel and mash the ripe banana in a mixing bowl until smooth and creamy.
Add rolled oats, peanut butter, chia seeds, chopped almonds, cinnamon powder, and vanilla extract.
Mix thoroughly until the ingredients form a sticky dough-like mixture.
If the mixture feels too wet, add 1–2 tablespoons of oats. If too dry, add a little more mashed banana.
Take small portions and roll into bite-sized energy balls.
Place the balls on a plate or tray and refrigerate for 20 minutes to firm up.
Serve chilled or store in an airtight container for a healthy grab-and-go snack.