To make the the crust, mix the sugar and cookies together then pour the melted butter on top and stir until combined. Press crumb mixture into a 9x13" pan.
Preheat oven to 325 °F (163 °C). Cream together cream cheese, sugar, and flour until light and fluffy. Add the eggs, one at a time, mixing well after each addition. Add sour cream and vanilla bean paste until just combined.
Pour on top of the prepared crust and bake for 45 minutes. Once done, cool completely.
In the meantime, prepare the ganache by heating the cream and butter in a small saucepan until just boiling. Remove from heat and pour over chocolate. Stir until melted and combined.
Add the confectioners sugar and whisk until combined and smooth.