Prepare all ingredients. Remove the butter in advance and soften at room temperature.
Whisk soft butter, sugar and vanilla using a blender or mixer.
Add eggs and sour cream.
Whisk, add cocoa, flour, salt and baking powder.
Whisk again until smooth.
Add the zucchini grated on a fine grater. Squeeze it out of the juice well beforehand.
Add chopped chocolate.
Stir. The dough is ready.
Transfer the dough to a greased baking dish. Sprinkle the bottom and sides with semolina or flour
Bake at 180 degrees until cooked through. Then cool the cake on a wire rack, covering with a towel. You can leave it overnight.
Before serving, decorate in any convenient way. I poured the top with chocolate icing and garnished with fresh raspberries. Chocolate sheet cake with zucchini is ready.