For the brownie:
- 125g unsalted butter
- 1 cup white sugar (200g)
- 50g 70% dark chocolate, roughly chopped
- 2 eggs
- 1 tsp vanilla
- 1/2 tsp instant coffee crystals, optional
- 1/2 tsp sea salt
- 1/4 cup cocoa powder (25g)
- 1 tsp baking powder
- 1 cup plain flour (125g)
For the cheesecake:
- 250g cream cheese
- 1/4 cup white sugar (60g)
- 1 egg
- 1 tsp vanilla
- 1/4 cup passionfruit pulp, plus 1 Tbsp extra for top
- 2 Tbsp plain flour (24g)
Grease a square cake tin (20 x 20 cm) and place a single strip of baking paper across the base and up two sides. Preheat oven to 180°C.
Make the passionfruit cheesecake layer
Beat cream cheese and sugar with a wooden spoon or an electric hand-mixer until smooth. Beat in egg and vanilla, followed by 1/4 cup passionfuit pulp. Add flour and stir until combined.
Make the brownie layer
- Melt butter in a large saucepan over medium heat. When melted remove pan from stove, immediately add chopped chocolate and sugar to the hot butter, and stir with a wooden spoon or silicone spatula until the chocolate has melted.
- Add eggs, vanilla, instant coffee (if using), and salt to the chocolate mixture – stir vigorously until shiny. Add cocoa powder, baking powder and flour and stir for 20 strokes until thick and smooth.
- Roughly spread half the brownie batter across the base of the prepared pan. Dollop half the cheesecake batter onto the chocolate, then top with remaining brownie batter followed by remaining cheesecake.
- Use a chopstick or the tip of a butter knife to gently swirl the layers. Drizzle over remaining 1 Tbsp passionfruit pulp.
- Bake 40 – 45 minutes until the centre of the brownie is puffed and just firm – a toothpick should come out with very little batter on it. Cover pan with foil for the second half of baking if top browns too quickly. Place brownies on a rack and cool completely in pan, at least an hour, before lifting out. Cut into bars to serve.
- Letting the cream cheese come to room temperature will make it much easier to beat with the sugar.
- Instant coffee intensifies the chocolate flavour, but you can leave it out if you wish.
- For brownies that are gooier in the centre, use the shorter baking time, for brownies that are more cake-like bake a bit longer.