From Mr.Food Cooks Real American
New York Pushcart Onion Sauce

Makes about 2 cups

2 tablespoons vegetable oil
2 medium sized onions, cut into 1/4 inch slices
1/4 cup ketchup
Pinch of ground cinnamon
1/8 teaspoon chili powder
Dash of hot pepper sauce
Dash of Salt
1 cup water

In a medium sized kettle, heat the oil over medium heat; add the
onions and saute until golden and limp, about 7 minutes. Mix in the
ketchup, then add the cinnamon, chili powder, hot pepper sauce and
salt. Pour in the water and stir. Bring the mixture to a boil, reduce
heat, and simmer, uncovered, for about 10 minutes or until the mixture
is heated through.

Note: This is really great spooned over cooked hot dogs, but try it with
other foods too, and watch how fast they disappear.