Birthday Cake Cheesecake
- In a large bowl, combine whipped heavy cream with softened cream cheese and sugar and stir until completely combined. (If cream cheese clumps remain, transfer mixture to a stand mixer or use a hand mixer.
- Fold in birthday cake mix.
- Pour mixture into prepared pie crust, smoothing over top with a rubber spatula. Top with sprinkles, cover with plastic wrap, and refrigerate until firm, at least 4 hours.