4 slices of old bread
Tomato sauce to taste
400gr of mozzarella cheese
Extra virgin olive oil
Turn on, with the help of an adult, the hooven to 175° and when it is hot, put in the slices of bread with a dense layer of tomato sauce and a little of oregano.
After 15 minutes pull out the slices, put on a lot of mozzarella cheese (or ricotta cheese) and some pieces of sardina and put in the hooven for additional 15 minutes.
Pull out little pizzas, dress with extra virgin olive oil and serve warm.