Preheat over to 350 Degrees F.
Prepare your muffin pan by spraying with non-stick cooking spray.
In a large bowl, combine flour, baking soda, salt, cinnamon and sugars.
In a separate bowl (or food processor), combine pumpkin puree, bananas, Greek yogurt, butter, vanilla and eggs, mix well to combine.
Combine dry ingredients and wet ingredients, and mix until just combined. Scoop batter into prepared muffin pan.
In a separate bowl, combine pecans, sugar and cinnamon. Stir to mix. Spoon or sprinkle on top of each muffin.
Bake for approx 20-25 minutes or until knife inserted in center comes out clean and muffins spring back when lightly touched.