01 - Bring a large pot of salted water to a boil and cook pasta according to package directions until al dente. Reserve 1/2 cup of pasta water then drain.
02 - Heat olive oil in a large skillet over medium heat. Add garlic and chili, sautéing for 1-2 minutes until fragrant without browning.
03 - Add diced tomatoes, sugar, salt, and black pepper to skillet. Simmer uncovered for 10–12 minutes, stirring occasionally, until sauce thickens.
04 - Adjust seasoning to taste. Stir half of the torn basil leaves into the sauce.
05 - Add drained pasta to the sauce, tossing to coat evenly. Add reserved pasta water gradually if sauce requires loosening.
06 - Remove from heat, stir in grated Parmesan and remaining basil leaves. Drizzle with extra virgin olive oil.
07 - Plate immediately, offering extra Parmesan and chili flakes as desired.