Prepare the basic mixture for pizza dough according to the package instructions and roll out on a baking sheet lined with baking paper. Preheat the oven to 175 ° C.
Mix the cream cheese with 5 tablespoons of water until smooth, season with salt and pepper. Fold in the red onion rings and parsley and spread the mixture on the dough. Bake in the oven for about 25 minutes. Just before the end, spread the raw ham on the cake.