Put the first five dry ingredients in a bowl and mix. Add the oil. Stir in eggs one at a time. Mix in the grated carrots and chopped walnuts. Pour the batter into a greased cake tin of your choice.
Bake in a preheated oven at 180 ° C for about 40-45 minutes (make a stick test!).
Then put 200 g cream cheese, 200 g powdered sugar, 1 1/2 teaspoons vanilla flavor and 80 g butter in a bowl and beat until creamy with the mixer. Spread on the cooled cake.
Decorate with walnut halves or small carrots (possibly made from marzipan).