How to Make It
Combine cranberries, sugar, orange juice, and salt in a medium saucepan over medium. Cook, stirring occasionally, just until berries begin to burst, about 10 minutes. Transfer to a small bowl, and lightly mash with a fork. Chill, uncovered, 1 hour.
Preheat oven to 400°F. Place shells on a rimmed baking sheet. Tear cheese into small pieces, and divide evenly among shells. Bake in preheated oven until cheese is softened, about 5 minutes. Remove from oven, and top each shell with 1/2 teaspoon of the cranberry mixture. Sprinkle evenly with pistachios and lemon zest. Transfer to a serving platter, and serve immediately.