1Preheat oven to 350 degrees F (175 degrees C). Line a 9x13-inch baking pan with parchment paper.
2Mash bananas in a large bowl with a fork. Stir in oats, raisins, almonds, coconut, sunflower seeds, and cinnamon. Press mixture into the prepared baking pan.
3Bake in the preheated oven until set, about 40 minutes. Let cool, about 15 minutes. Cut into bars.