Preheat the oven to 350 degrees F.
Lightly spray a 12-cup muffin tin with cooking spray and set aside.
In a medium mixing bowl, stir together the oats, coconut, flaxmeal, cinnamon, nutmeg, ginger, baking powder and salt and set aside.
In another medium mixing bowl, whisk together the smashed banana, non-dairy milk, maple syrup, and vanilla.
Pour the wet ingredients over the dry while stirring to coat. Mix thoroughly to ensure all the dry ingredients are moistened.
Stir in the shredded carrots and walnuts and stir well.
Spoon the mixture into the prepared muffin tins. Fill each one all the way to the top and pack it down with the back of a spoon.
Bake for 20-25 minutes until the baked oatmeal starts to pull away from the sides easily.
Let it cool in the pan on a wire rack for at least 10 minutes. Then, gently with knife or a spoon, lift them out of the tin and continue to let them cool on the wire rack.
Serve them with Sweet Cashew Cream Cheese or a little extra maple syrup.