Preheat the oven at 350°F.
Wash, peel and finely grate carrots.
Add oats, brown sugar, baking powder, baking soda, cinnamon powder, nutmeg powder and salt to blender or food processor.
Blend.
Add grated carrots, oil and egg to blender or food processor.
Combine to form a lumpy batter.
Grease or line muffin trays.
Pour 1/3 cup of batter into each muffin cup.
Sprinkle the brown sugar on the top.
Bake for 20 minutes.
Remove from the oven, check for doneness.
Place on a cooling rack to completely cool.