Chocolate Rice Krispies Treats

I guess I have been on a Rice Krispies Kick. Last night I made Chocolate Treats

Chocolate Kellogg's® Rice Krispies Treats® Prep Time: 10 minutes Total Time: 10 minutes Servings: 12Ingredients:3tablespoons butter,,4cups mini marshmallows, 6 cups Chocolate Rice Krispies®. Melt butter in large saucepan over low heat. Add marshmallows and stir until completely melted. Remove from heat.2. Add KELLOGG'S RICE KRISPIES cereal. Stir until well coated.3. Using buttered spatula or waxed paper, press mixture evenly into 13 x 9 x 2-inch pan coated with cooking spray. Cut into 2-inch squares when cool. Best if served the same day.