In a large mixing bowl, combine the ricotta cheese and softened cream cheese. Using a hand mixer, beat until smooth and creamy. Gradually add ¾ cup of sugar and continue to mix until well combined.
Add the eggs one at a time, mixing well after each addition. Then, incorporate the orange zest, fresh orange juice, vanilla extract, and cornstarch, mixing until silky and uniform.
Pour the cheesecake mixture into the pre-made graham cracker crust, spreading it evenly.
Place the cheesecake in the preheated oven and bake for 50-60 minutes or until the edges are set and the center slightly jiggles. Turn off the oven, crack the door open, and let the cheesecake cool inside for about 1 hour.
Once cooled, refrigerate the cheesecake for at least 4 hours, preferably overnight, to set completely.
In a medium saucepan, combine cranberries, 1 cup of sugar, and 1 cup of water. Add cinnamon and bring the mixture to a boil over medium heat. Reduce to a simmer and cook for 10-15 minutes, stirring occasionally, until the cranberries burst and the sauce thickens. Remove from heat and let it cool.
Once the cheesecake is fully chilled, slice it into wedges. Serve with a generous spoonful of cranberry sauce on top or on the side.
Notes
Garnish each slice with a sprig of fresh mint and a sprinkle of orange zest for a pop of color.