Spritz a small skillet with the olive oil spray; add water to the pan and heat over medium heat.
Saute the apple slices with the cinnamon, stirring constantly, for 1-2 minutes or until softened.
In a blender or food processor, blend the apples with the remaining ingredients, except the Flora-Key, until just small chunks remain.
Lightly coat the skillet again with a spritz of olive oil; heat over medium heat.
Ladle the squash mixture into the pan by the heaping tablespoon and cook for about 3 minutes per side, until lightly browned.
Carefully flip the fritter, cooking only until done, about 1 minute.
Sprinkle with the Flora-Key.