Preheat the oven to 375 degrees F and line a baking sheet with parchment paper. 

In a large mixing bowl, mash the bananas with a fork until smooth.

Fold the oatmeal into the mashed bananas, followed by the chocolate chips. 

Divide the “dough” into 24 2-inch balls and arrange them on the prepared baking sheet. 

Flatten each ball with your hand or the back of a rubber spatula until about 1/4-1/2 inch thick. These cookies will not spread or change shape in the oven. 

Bake for 15-20 minutes or until the edges are starting to brown.

Allow the cookies to cool for a couple of minutes before transferring them to a wire rack to cool completely.