Hot Caramel Apple Cider

1/2 gallon fresh apple cider
1/4 cup packed brown sugar
1/4 cup caramel ice cream topping
1 cup frozen whipped topping, thawed

In large saucepan, combine the cider, sugar and caramel topping over medium heat. Simmer until hot and well blended, stirring frequently. Pour into mugs and top with whipped topping.