Preheat the oven to 425 degrees. Spray a muffin pan with cooking spray, or use muffin liners.
In a medium bowl, combine mashed bananas, carrots, yogurt, egg (or chia egg), and vanilla until evenly combined.
In a medium bowl, combine dry ingredients until completely combined.
Add the dry ingredients to the wet ingredients and stir until just combined.
Divide evenly among 12 prepared muffin tins. Bake at 425 degrees for 5 minutes. Then, without taking the muffins out, turn down the heat to 350 degrees. Bake for an additional 15 or so minutes. The muffins should be golden brown and a toothpick inserted into the center should come out mostly clean with a few moist crumbs. Remember, oven times may vary, so I recommend checking on them early!
Allow to cool and enjoy!