Why mess with a classic? I got this recipe directly off the Rice Krispie website. This is such a simple recipe that everyone knows and loves.

Directions:

1. In large saucepan melt butter over low heat. 
2. Add marshmallows and stir until completely melted then remove from heat. 
3. Add Rice Krispies cereal. Stir until well coated.
4. Using buttered spatula or wax paper evenly press mixture into 13 x 9 x 2-inch pan coated with cooking spray. 
5. Let cool and cut into 2-inch squares. 
6. Best if served the same day.