Dissolve yeast and sugar in warm water. Let it sit for 5 minutes.
Combine flour and salt in a large mixing bowl.
Add the yeast mixture and olive oil to the flour.
Knead the dough for about 10 minutes until smooth.
Cover the dough and let it rise in a warm place for 30 minutes.
Preheat your oven to 475°F (245°C).
Roll out the dough on a floured surface.
Spread crushed tomatoes over the dough.
Slice the mozzarella and arrange it on top.
Season with salt and pepper, then add fresh basil leaves.
Bake for 10-15 minutes until the crust is golden.