For the dough: • flour (about 500 grams or 4 cups) • powdered milk • oil • yeast dissolved in 1/2 cup water and 1/2 teaspoon sugar • salt • For the meat mixture: • onions, finely chopped • tomatoes, grated, and 2 tablespoons tomato paste • bell peppers, finely chopped • parsley, finely chopped • oil •