Mix in the margarine and sugar until smooth, gradually adding in the sugar, vanilla sugar, eggs, salt and rum flavor. Mix the gluten-free flour and baking powder and stir in alternately with milk!
Pour 2/3 of the finished dough into a large, greased pan dusted with gluten-free flour. Mix the remaining dough with the cocoa and the remaining ingredients and pour onto the light dough in the mold. Pull through the dough in a spiral with a fork.
Bake at 200 ° C top / bottom heat. After 60 minutes do the chopsticks test and see whether the cake is already baked through - with my oven it takes about 70 - 75 minutes.
Then leave the cake in the oven for another 5 minutes. Then take it out, turn it out of the mold onto a wire shelf and let it cool down. Dust with powdered sugar or cover with melted couverture and sprinkle with flaked almonds.