Summertime BBQ Sauce

½ cup Karo Light Syrup
½ cup Ketchup
½ cup finely diced or grated onion
¼ cup Apple Cider Vinegar
¼ cup Worcestershire Sauce
¼ cup prepared Yellow Mustard

Mix all ingredients in a small saucepan. Bring to a boil and simmer for 15-20 minutes until desired thickness. Use over meat or vegetables.