This cravable creamsicle cheesecake will take you back to your childhood when you visited the ice cream truck on hot summer days. A mixture of sour cream and cream makes for a rich and creamy cheesecake. This recipe uses orange extract as opposed to orange zest or juice. If you are unable to find orange extract, substitute with 1 tablespoon of finely grated orange zest. Top your cheesecake with freshly whipped cream and orange segments. Creamsicle cheesecake tastes just like the ice cream bars of your youth.