Deluxe Rice Krispie Treats

6 Tbs. butter
1 16 oz. bag mini-marshmallows
6 cups Rice Krispies
1 tsp. vanilla
1/2 caramel topping

Melt butter in saucepan. Add marshmallows and melt. Stir in vanilla and caramel. Pour in Rice Krispies and mix well. Put in 9x13 pan. Devour!