Step 1

In a large pot, stir together the crushed tomatoes, tomato paste, 1 cup water, onion, garlic, salt, black pepper, brown sugar, Italian seasoning, rosemary, bay leaf, and grated Parmesan cheese. Bring to a boil. Reduce heat and simmer, uncovered, stirring occasionally for 2 hours.

Step 2

Cook the spaghetti according to package instructions just to al dente. Drain well, reserving 1 cup of pasta water, and return to the pasta pot. While spaghetti is still hot, add 1/2 the sauce and toss to coat. Add more sauce as desired. If the sauce is too thick, thin with reserved pasta water. Turn pasta out onto a large serving platter, sprinkle with parsley and serve.