Preheat the oven to 350 degrees F (175 degrees C). Line an 8-inch square baking dish with parchment paper.

Combine oats and applesauce until moist. Spread into the prepared baking dish.

Bake in the preheated oven until sticky, 10 to 12 minutes.

Remove from the oven, flip onto a cutting board, and cut into 1-inch squares. Allow to cool before serving.