Preheat your oven to 350℉. Start by prepping your ingredients (ie. peeling and grating your carrots and chopping your walnuts) then set aside.
Grab your two large mixing bowls. In one of them, combine your dry ingredients (oats, spices salt, baking powder).
In the other large mixing bowl, combine your wet ingredients (bananas, eggs, milk, yogurt, nut butter, honey, and vanilla extract). To mash the bananas, use a fork to flatten!
Pour your wet ingredients into your dry ingredients bowl and mix well. Then fold in the grated carrots, chopped nuts, and seeds. Mix well until everything is equally distributed in the batter.
Pour your batter into a baking dish and bake in the oven for 30 minutes.
Icing
While your cake bakes, prepare your icing by combining the icing ingredients in a small mixing bowl.
Apply to the surface of your cake once it has fully cooled after baking.
Optional: If you have left over chopped walnuts, you can use as garnish atop the icing with some cinnamon!