Pre-heat the oven to 375F (190C). Grease and flour a 12 medium size muffin pan or a 6 large size muffin pan.
In a large bowl whisk together until smooth oil, eggs and pumpkin puree until combined.
In a medium bowl whisk together the flour, baking powder, cinnamon, pumpkin pie spice, salt, sugars and nuts.
Then add the flour mixture to the egg mixture. And mix with a wooden spoon or spatula just until combined (about 15-16 stirs). Spoon into the prepared muffin tin* (if using the large one use 5 if medium i think 10 you see). Bake approximately 15-20 minutes check with a toothpick. Let the muffins cool, then remove from the tin to cool completely. Drizzle with Cinnamon glaze if desired. Enjoy!
FOR THE CINNAMON GLAZE
In a small bowl whisk together the powder sugar and cinnamon until combined then add the milk or cream, one tablespoon at a time until you reach the desired constituency.
*You will probably get about 10 medium or 5 large. I like to fill my muffin pans almost full to the rim.