Wash the carrots thoroughly and finely grate them.
Combine eggs, sugar, and cooking oil in a large bowl and mix well.
Sift flour, baking powder, and cinnamon powder, then add and mix thoroughly.
Add the grated carrots and chopped walnuts, and mix evenly.
Pour the batter into the oven pan and smooth it out.
Bake in a 180°C oven for 35~40 minutes.
After cooling, top with cream cheese frosting.