Devil's food cupcake with passion fruit filling

Preparation

• Preheat oven to 350 degrees F. Oil two 7.9inch (20cm) springform cake pan and line the bottom with baking paper.
• Start by making the filling: place the cream in a saucepan and heat until it is nearly boiling. Remove from heat and add the chocolate all at once.
• Whisk until the chocolate is melted and the mixture is silky and smooth. Add the juice, mix well; refrigerate it, well covered, for 4-6 hours or until set.
• To make the cupcakes, in a medium sized mixing bowl, sift together flour, cocoa powder, baking powder, baking soda and salt.
• In a large mixing bowl, using a mixer on medium speed, beat oil, butter, granulated sugar and vanilla, until creamy, about 2 minutes.
• Beat in eggs, one at a time, until well combined. Beat in 1 cup melted chocolate chips until combined.
• Reduce mixer speed to low and beat in flour mixture, alternating with buttermilk, until well combined, about 2-3 minutes.
• Divide batter into cupcakes pans. Bake 20 minutes, or until just set, and a toothpick inserted into cake comes out with moist crumbs attached.
• Cool for 5 minutes before transferring to wire racks to cool completely.