Preheat Oven to 300 Degrees Fahrenheit (unless you have a Celsius oven too then 160 degrees)
Take 1 banana and about a cup and a half of oatmeal and put it in a bowl. And then add a couple dashes of cinnamon for satisfaction and feel free to add a touch of vanilla extract and vegan butter or chocolate chips (optional).
Then mash it all together and place them in cookie shapes on a lined baking sheet.
Bake for about 15 minutes. Feel free to do a cookie song and dance... And there you go, delicious super simple oatmeal cookies!