2/3 cup heavy cream
1/3 cup confectioners' sugar
3 tablespoons amaretto or orange liqueur
1 teaspoon ground cinnamon
1 cup ricotta cheese
1/4 cup unsalted pistachios, chopped, optional, plus 3/4 cup finely chopped, for garnish
12 store-bought cannoli shells
Vegetable oil, for frying
1 cup all-purpose flour
1/4 cup sugar
2 eggs
1/2 cup milk
1/2 cup chocolate, melted
Confectioners' sugar, for garnish