Divide the batter between three 6 inch (16cm) cake pans or two 8 inch (18cm) pans. Bake for 25 minutes or until a toothpick inserted in the middle comes out clean.
Cool in the pans for five minutes then run a knife around the edges of the pan and carefully invert onto a wire rack to cool before frosting.
Make the filling and frosting
To make the filling, put the mascarpone, powdered sugar, cream and vanilla extract in the bowl of your stand mixer. Start mixing on low speed to combine, then increase the speed to highest setting until you have firm peaks. Do not over mix.
7 oz (200g) mascarpone, 1 ¾ cups (200g) powdered sugar, ⅔ cup (150ml) heavy cream, 2 tsp vanilla bean paste
To make the matcha frosting, put the double cream in the bowl of your stand mixer. Sift in the icing sugar and matcha powder. Start whisking on slow speed to combine, then increase to highest speed until you have firm peaks.
1 cup (240ml) heavy cream, 1 ¾ cups (200g) powdered sugar, 2 tbsp milk powder, 1 tsp matcha powder
Assemble the matcha layer cake
Pipe a generous layer of mascarpone over the bottom cake layer and then scatter with a few sliced strawberries (optional).
15-20 strawberries
Repeat with the second layer, top with the third and add a thin layer of mascarpone over the entire cake as a crumb coat. Chill in the fridge while you prepare the frosting.
Use a palette knife to smooth the matcha frosting over the entire cake. Drag the knife upwards to create little rustic finish on the cake and then top with fresh strawberries.