1. In large nonstick skillet heat oil. Add sliced
onions and cook over high heat until onions begin to
brown, about 10 minutes. If they begin to burn a
little, that's o.k. too.
2. Lower the heat and add salt, sugar and spices. Cook
10 minutes, stirring often, until onions are uniformly
caramel-colored. Add water and vinegar and cover.
Simmer while the pasta is cooking.
3. Meanwhile, in a separate pot, bring 3 quarts of
water to a boil. Cook pasta al dente. Drain well.
4. Divide pasta equally into 4 heated bowls. Top with
equal portions of caramelized onions and sprinkle with
grated Parmesan cheese, if desired.
