01 -
Preheat the oven to 175°C. Grease a 23-centimetre springform pan and line the base with parchment paper.
02 -
In a mixing bowl, combine brownie mix, vegetable oil, water, and 2 eggs. Stir until the batter is smooth and homogenous.
03 -
Pour the brownie batter into the prepared pan and bake for 15 minutes, or until the surface is just set.
04 -
In a separate bowl, beat the softened cream cheese until creamy. Gradually blend in granulated sugar and flour until smooth.
05 -
Add vanilla extract and sour cream, mixing until fully incorporated. Stir in 1 egg gently by hand to prevent incorporating excess air.
06 -
Spread the cheesecake mixture evenly over the baked brownie base while it is still warm.
07 -
Lower the oven temperature to 160°C. Bake for 45 minutes until the cheesecake is set but has a slight wobble at the centre.
08 -
Turn off the oven, leaving the cheesecake inside with the door closed for 20 minutes. Then, crack the oven door open and let cool for an additional 30 minutes.
09 -
Remove the cheesecake to room temperature, then refrigerate for 2 to 3 hours until fully chilled.
10 -
With an electric mixer, beat 240 millilitres heavy whipping cream with powdered sugar until stiff peaks form.
11 -
Top the chilled cheesecake with whipped cream, drizzle with hot fudge sauce, and add fresh berries or chocolate shavings as desired. Slice and serve.