Easy Barbecue Sauce This is excellent on ribs or chicken. 2 tablespoons vegetable oil 1 medium onion, chopped 3 cans tomato sauce 1 cup vinegar 1/2 cup molasses or firmly packed brown sugar 2 tablespoons Worcestershire sauce 1 teaspoon coarse black pepper Sauté onions in oil for about 10 minutes. Add remaining ingredients and simmer for 45 minutes. If it gets too thick, add a little water.