In a large heavy pot, heat the oil over medium-high heat. Add the onions and cook, stirring, until soft, 4 to 5 minutes. Add the garlic and red pepper flakes. Stir until fragrant, about 30 seconds. Add the tomato paste and cook, stirring, for 1 minute. Add the garlic puree, and cook, stirring, for 30 seconds. Add the tomatoes and their juices, tomato sauce, hot sauce and sugar. Bring to a boil, stirring occasionally. Reduce the heat to medium-low and simmer uncovered, stirring occasionally, until thick and fragrant, 30 minutes. Remove from the heat and cover.
Bring a large pot of salted water to a boil. Add the pasta and cook until just barely al dente, 8 to 10 minutes. Drain and transfer to the pot with the sauce. Add the lemon juice and bring to a simmer and cook until the pasta is well coated and warmed through, about 3 minutes.
Transfer to a large, decorative pasta bowl and toss with the basil and 1/2 cup of the cheese. Garnish with parsley. Serve immediately and pass the additional 1/4 cup of cheese at tableside.
Yield: 6 servings