Step 1: Prepare the Brownie Base

1. Preheat the oven to 350°F (175°C). Grease a 9-inch springform pan and line the bottom with parchment paper.
2. In a mixing bowl, whisk together melted butter, sugar, eggs, and vanilla until smooth.
3. Sift in cocoa powder, flour, salt, and baking powder. Stir until just combined—do not overmix.
4. Pour the brownie batter into the prepared pan and spread evenly.
5. Bake for 12-15 minutes, or until the top is set but still slightly underbaked (it will continue baking with the cheesecake layer).

Step 2: Make the Cheesecake Filling

1. In a large bowl, beat the cream cheese and sugar until smooth and creamy.
2. Add eggs, one at a time, mixing just until incorporated (do not overbeat).
3. Stir in sour cream and vanilla extract for extra creaminess.
4. Fold in mini chocolate chips if using.
5. Pour the cheesecake mixture over the brownie layer and smooth the top.

Step 3: Bake the Cheesecake

1. Lower the oven temperature to 325°F (163°C).
2. Place the springform pan in a large roasting pan. Fill the roasting pan with hot water until it reaches about 1 inch up the sides of the cheesecake pan. This prevents cracks in the cheesecake.
3. Bake for 45-50 minutes, or until the center is slightly jiggly but the edges are set.
4. Turn off the oven and let the cheesecake cool inside with the door slightly open for 1 hour.
5. Transfer to the refrigerator and chill for at least 4 hours or overnight.

Step 4: Add the Caramel & Chocolate Toppings

1. Drizzle the caramel sauce over the fully chilled cheesecake, spreading evenly.
2. Sprinkle sea salt over the caramel for a salted caramel twist (optional).
3. Drizzle melted chocolate in a zigzag pattern over the caramel layer.
4. Garnish with whipped cream and chocolate shavings for an elegant finish.

Serving & Storing Tips

• For clean slices, run a knife under hot water and wipe clean between each cut.
• Store in the fridge for up to 5 days in an airtight container.
• Freeze for later! Wrap individual slices in plastic wrap and store in the freezer for up to 3 months.