Tiramisu Cupcakes

Ingredients

• 155 g (1 cup+1/4 cup) all-purpose flour
• 1 teaspoon baking powder
• 150 g (3/4 cup) caster sugar
• 1 pinch salt
• 1 large egg
• 120 ml (1/2 cup) milk
• 45 ml (1/4 cup) vegetable oil
• 2 teaspoons vanilla extract
• 30 cl (1 cup + 1/4 cup) milk
• 1 teaspoon espresso powder
• 3 egg yolks
• 50 g (1/4 cup) caster sugar
• 30 g (4 Tbsp) cornstarch
• 30 g (2 Tbsp) unsalted butter - diced
• 240 ml (1 cup) heavy cream
• 120 g (1/2 cup) mascarpone cheese
• 50 g (1/2 cup) powdered sugar
• 1 teaspoon vanilla extract
• cocoa powder
• coffee beans (optional)