Mix butter or margarine, sugar and nougat until creamy. Stir in the eggs one at a time. Pour in eggnog, continue stirring. Mix in flour and baking powder and stir in. Fold in dominoes.
Pour the dough into a Gugelhupf pan with a volume of approx. 2.5 l and smooth it out. Bake at 150 ° C (convection) for 65-70 minutes. Let cool and dust with powdered sugar.