Preheat oven to 350 degrees F. Line a baking sheet with parchment paper or grease a cookie sheet.
In a bowl, mash the banana until it gets to a sticky texture.
Add in flax seeds, pumpkin seeds, and raisins into the bowl and mix thoroughly.
Drop about 1/2 tablespoon drops of the batter onto the baking sheet. (I used a small soup spoon for this.) Flatten the batter into a round cookie shape.
Place the cookies into the oven and bake for about 20-22 minutes or until the edges turn into a nice brown color.
Remove from the oven and let cool. Enjoy!