Sweet Barbecue Sauce

This is good for beef or chicken.

1/2 cup (1 stick) margarine
1 medium onion, diced
1 cup brown sugar
1 small bottle catsup
1/2 cup water
Dash of hot sauce
1 teaspoon Worcestershire sauce
1 tablespoon chili powder

Melt margarine; add onion and brown sugar and simmer together for 5 minutes. Add remaining ingredients. Simmer together for 20 minutes.