Crunchy? Check. Sweet? Check. Nutty? Check. Chocolaty? Check. Pistachio scotcheroos have everything you’d expect from a great dessert. If you’ve never had a scotcheroo, you’re missing out: The vintage dessert is like a leveled-up Rice Krispies treat, made by stirring melted marshmallows and peanut butter into cereal, and topping …