Peanut Butter Rice Krispie Treats Author: TastyShare Prep time: 10 mins Cook time: 5 mins Total time: 15 mins Serves: 12 Ingredients 3 tablespoons salted butter (margarine is not recommended) 1 package (10 ounces, about 40) marshmallows or 4 cups miniature marshmallows 1/2 cup peanut butter 3 cups Rice Krispies cereal 3 cups Cocoa Krispies