In a saucepan, add the hotdog sausages, add enough water to cover them, bring them to a boil and let them cook until boiled.
After that, drain all the water and cut the sausages into round slices.
Transfer them to a bowl and add the ketchup, the mustard and the Brazilian cream cheese, mix all the ingredients together very well until combined.
Transfer half of these sausages to an ovenproof baking dish.
Add 100g of mozzarella cheese chopped into squares.
Add the rest of the sausages.
Add another 100g of mozzarella cheese chopped into squares and oregano to taste.
Take to a preheated oven at 200°C (400°F) and bake for 15 minutes.
Serve.