First, you have to grate the carrots and grind the walnuts.
Mix the dry ingredients together in a bowl and the liquid ingredients in a separate bowl.Important: Melt coconut oil and mix with milk at room temperature. (Since coconut oil is solid at room temperature, cold ingredients make it solid again and form lumps.)
Then stir the dry ingredients into the liquid ingredients.
Add the carrots and walnuts to the dough, stir well again.
Pour the dough into a greased baking tin. Bake the cake in the oven for about 30 minutes.
Let the cake cool down a little and prepare the frosting. Mix cream cheese with butter and powdered sugar (sift it in!). If the cream cheese is too soft, add more icing sugar. If the cream cheese is too firm, add some milk. It is important that the frosting has a stiff consistency. Put the cream only on the cooled cake! (Unfortunately, I did not pay attention to the last points...).