1. Preparing the Crust

1. Preheat oven to 325°F (163°C). Grease a 9-inch springform pan.
2. In a medium bowl, mix graham cracker crumbs, sugar, and melted butter until combined.
3. Press the mixture evenly into the bottom of the pan. Bake for 8-10 minutes, then let cool.

2. Making the Cheesecake Batter

4. In a large bowl, beat cream cheese and sugar until smooth.
5. Add sour cream, vanilla extract, and cream soda, mixing until fully incorporated.
6. Beat in eggs one at a time, mixing on low speed to avoid overbeating.

3. Creating the Purple Swirls

7. In a saucepan over medium heat, combine heavy cream, brown sugar, butter, and vanilla. Stir until smooth.
8. Remove from heat and mix in purple gel food coloring.
9. Drizzle the purple mixture over the cheesecake batter and use a toothpick or skewer to swirl it.

4. Baking the Cheesecake

10. Place a baking pan filled with water on the lower oven rack to prevent cracks.
11. Bake the cheesecake for 55-65 minutes, or until the center is slightly set.
12. Turn off the oven and let the cheesecake cool inside with the door slightly open for 1 hour.

5. Decorating the Cheesecake

13. Once fully cooled, sprinkle edible silver dust to mimic a starry sky.
14. Optionally, add edible glitter or sprinkles for extra magic.
15. Chill in the fridge for at least 4 hours before serving.