In a large bowl combine pumpkin, maple syrup, egg, and vanilla. Whisk to combine.
In a medium bowl combine flour, oats, flax seeds, salt, and pumpkin spice.
Combine dry ingredients into the wet ingredients and mix to combine.
Pat the "dough" into a greased 9x9 pan and bake at 350 for 20 minutes.
For the glaze combine all ingredients in a bowl and whisk. Drizzle over the bars once they have cooled.