2 tbsp. butter
1 onion, chopped
1 clove garlic, minced
1 1/4 c. catsup
1/3 c. brown sugar
1/4 c. Worcestershire sauce
2 tsp. chili powder
1/3 c. vinegar

Saute butter, onions and garlic until onions are soft. Add remaining ingredients and stir over medium heat. Simmer for 15 minutes. For a thicker sauce, allow to cool.