How to Make Banana Oat Cookies

Step 1 - Preheat and prepare: Preheat the oven to 350 degrees F and line a baking sheet with parchment paper. The parchment is important here — these cookies have no butter or fat in the dough itself, which means they will stick aggressively to an unlined or ungreased pan and tear apart when you try to remove them. Parchment eliminates this problem entirely and also makes cleanup effortless.

Step 2 - Mash the bananas: Peel the bananas and place them in a large bowl. Mash vigorously with a fork until no large chunks remain and the texture is smooth and almost liquid — think applesauce consistency rather than chunky mash. A few small pieces are fine, but large banana chunks will create uneven pockets in the cookies that affect both texture and how evenly they bake. The more thoroughly the banana is mashed, the more evenly it distributes through the oats.

Step 3 - Mix in the oats: Add the rolled oats to the mashed banana and stir until completely combined and every oat is coated in the banana mixture. Fold in the chocolate chips. The dough will look wet and loose at this point — do not add more oats to compensate. Let the mixture rest for five minutes undisturbed, then check the consistency. After resting, it should be thick enough to scoop and hold a rough shape on the pan.

Step 4 - Scoop and flatten: Using a spoon or a small cookie scoop, portion the dough into roughly 12 equal mounds on the prepared baking sheet, spacing them about an inch apart. Flatten each mound slightly with the back of the spoon — these cookies do not spread in the oven the way butter-based doughs do, so the shape you press them into before baking is approximately the shape they will have when they come out. Aim for a round disc about 1/2 inch thick.

Step 5 - Bake and cool: Bake for 12 to 14 minutes until the edges are set and the tops look dry and lightly golden rather than shiny and wet. The cookies will feel soft when you press them gently straight from the oven — this is correct. They firm up considerably as they cool and develop their final chewy texture over the following five to ten minutes on the pan. Do not try to move them to a rack immediately or they will fall apart. Let them cool on the baking sheet for at least eight minutes before transferring.