Preheat oven to 400ºF. Line baking sheet with parchment paper. In a large bowl, mix together flour, sugar, salt, baking soda and baking powder.
Place dough on a floured work surface and knead. Shape into a round loaf. Then place on parchment-covered cookie sheet and cut a cross in the top. Bake for 15 minutes then reduce heat to 350ºF and cook for another 15-20 minutes.
Preparation time: 5-7 minutes. Cooking time: 30-35 minute(s). Number of servings (yield): 10-12.