In a mixing bowl, combine the ricotta cheese, mascarpone cheese, powdered sugar, vanilla extract, and ground cinnamon. Mix until smooth and creamy.
Gently fold in the mini chocolate chips and orange zest until evenly distributed.
Using a piping bag or a plastic sandwich bag with one corner snipped off, pipe the ricotta mixture into each mini phyllo cup, filling them generously.
Once all the cups are filled, sprinkle with chopped pistachios for an added crunch.
Dust the tops lightly with additional powdered sugar for presentation.
Chill the cannoli cups in the refrigerator for at least 30 minutes before serving to allow the flavors to meld.
Notes
Arrange the mini cannoli cups on a decorative platter and serve with a few extra chocolate chips and orange zest scattered around for an attractive touch.