Preheat oven to 350 degrees
Combine sugar, yogurt, butter and applesauce. Using the electric grinder, beat the ingredients until combined smoothly.
Add eggs; pumpkin puree, bananas and carrots. Beat the mix again until combined.
Add rolled oats, wheat flour, all purpose flour, cinnamon, baking soda and salt to the wet mix. Combine well using the spatula.
Pour the batter into greased muffins tins.
Bake for 15 - 17 minutes or until the inserted toothpick comes out clean.
Remove from the pans and let cool on the cooling tray for 10 - 15 minutes.