Prepare the main ingredients for the dough. To do this, mash the bananas with a fork. Dry the oatmeal in a dry frying pan for 5 minutes. Grind the flakes into flour with a blender.
Make the dough. Add the flakes to the bananas and mix. Put the cranberries and seeds in a bowl and mix. Pour in the vegetable oil and mix the mixture thoroughly.
Form round cookies. Place them on a baking sheet. Bake for about 25-30 minutes. Remove the finished cookies from the baking sheet and serve. Enjoy!