01 -
Preheat the oven to 325°F (160°C) and grease a springform pan.
02 -
In a bowl, mix graham cracker crumbs and melted butter. Press the mixture into the pan to form the crust. Set aside.
03 -
In another bowl, beat cream cheese and sugar until smooth. Add the eggs one at a time, beating well after each addition.
04 -
Stir in the vanilla extract, sour cream, and flour until just combined.
05 -
Divide the batter into two portions. To one half, add orange juice, zest, and food coloring, mixing well.
06 -
Alternately pour the plain and orange batters into the prepared crust. Use a knife to swirl the layers, creating a marbled effect.
07 -
Bake for 50–60 minutes, until the center is nearly set but still has a slight jiggle.
08 -
Turn off the oven, crack the door open, and let the cheesecake cool in the oven for one hour.
09 -
Remove from the oven and chill for at least 4 hours, or overnight.
10 -
Garnish with an orange slice before serving.