Oat balls

Oats are the sweetest grain. You can make healthy and very delicious sweets from it. And it fills you up so quickly that everyone in the family has some left over. They'll be clamoring for it, it's so delicious. And it's easy to make.
What you need:
500g of oat-flakes
200g of butter
100g of powdered sugar
For decoration:
Cocoa powder, powdered sugar or cinnamon