In a microwave-safe bowl, melt the 4 oz of white chocolate candy melts. Heat in 30-second increments, stirring in between until completely melted and smooth. Set aside to cool slightly.
In a large mixing bowl, add the 8 oz of softened cream cheese. Using an electric mixer, beat until smooth and creamy.
Add the 14 oz can of sweetened condensed milk, 1 tsp vanilla extract, and 1/2 tsp cinnamon to the cream cheese. Mix until well combined.
Gently fold in the 8 oz of thawed Cool Whip. This will lighten the mixture, giving your ice cream that airy texture.
Pour the melted white chocolate into the cheesecake mixture and fold until fully incorporated.
Stir in the 2 cups of Cinnamon Toast Crunch cereal, reserving a handful for topping later if desired.
Transfer the mixture into a freezer-safe container, smoothing the top with a spatula. Cover tightly and freeze for at least 4 hours, or until firm.
Once frozen, scoop out the Snickerdoodle Cheesecake Ice Cream into bowls and sprinkle with the reserved Cinnamon Toast Crunch for an extra crunch. Enjoy your delightful, homemade treat!