Preheat oven to 350 F. Lightly grease a 12-muffin tin with non-stick cooking spray.
In bowl, combine eggs, oil, sugar and mashed fruit or veggie. Whisk. Mix well.
Add flour, baking soda, baking powder and cinnamon. Mix until it forms into batter. Add nuts if you like.
Pour into prepared muffin tin cups.
Bake in the preheated oven for 15-20 minutes, or until tops are golden.
Cool on cooling rack and then serve to hungry little people!