Preheat oven to 350* Whisk together flour, cinnamon, pumpkin spice, salt, baking powder and baking soda and set to the side. .
Beat the sugar and butte on high for 2 minutes, then add the eggs and beat another minute. Beat in pumpkin, mashed banana, buttermilk and vanilla.
Place batter in a greased or lined muffin tin, about 3/4 full. Bake 20-22 minutes until an inserted toothpick comes out clean.