Try this one, it taste great. Can't remember where I got it though.
Big T's Maple Bourbon Barbecue Sauce
1/4 cup butter
1 tablespoon canola oil
2 1/2 cups medium onions, finely diced
1 1/4 cups apple cider vinegar
3/4 cup molasses
1 1/4 cups Canadian maple syrup
1/2 cup Jim Beam White Label bourbon
1 1/2 cups ketchup
1 1/4 cups orange juice
1/4 cup Worcestershire
1 1/4 teaspoons black pepper
3 teaspoons salt
Melt butter in a large saucepan, and add in the oil. Saute the onions until they're translucent. Add the vinegar, molasses, and maple syrup and stir until dissolved, then add the rest of the ingredients. Stir over medium heat until all ingredients are well blended, and bring to a boil. Then, lower the heat and simmer for 30 minutes.