Traditional Spaghetti all'Amatriciana Recipe

Bring a large pot of lightly salted water to a boil. Cook spaghetti in the boiling water stirring occasionally until tender yet firm to the bite about 12 minutes.

Meanwhile heat 2 tablespoons olive oil in a large skillet over medium heat and cook onion until golden brown about 5 minutes. Add pancetta and cook stirring occasionally until crisp 2 to 3 minutes. Pour in passata water and sugar; cook until sauce has thickened 10 to 15 minutes

Drain spaghetti and toss with sauce remaining olive oil Parmesan cheese and red pepper flakes. Season with salt and pepper.