01 - Bring a large pot of salted water to a boil. Cook pasta according to package instructions until al dente. Drain, reserving 1/2 cup pasta water.
02 - Heat olive oil in a large skillet over medium heat. Add garlic and chili, sauté for 1 minute until fragrant but not browned.
03 - Stir in crushed tomatoes, tomato paste, sugar, salt, and pepper. Simmer gently for 10-12 minutes, stirring occasionally, until sauce thickens.
04 - Add drained pasta to the sauce, tossing to coat evenly. If sauce is too thick, add reserved pasta water a little at a time to achieve desired consistency.
05 - Remove skillet from heat and stir in torn fresh basil leaves.
06 - Plate immediately, topping with freshly grated Parmesan cheese if desired.