Ingredients:
For the Sponge Cake:
3 large eggs, separated
¾ cup granulated sugar
½ teaspoon vanilla extract
¾ cup all-purpose flour
¼ teaspoon baking powder
Pinch of salt
For the Tapioca Filling:
- 1 cup water
- ½ cup milk
- ½ cup instant tapioca pearls
- ¾ cup granulated sugar
- 1 (13.5 oz) can coconut milk
- 1 tablespoon cornstarch
- 1 teaspoon vanilla extract
- For Whipped Cream Frosting (Optional):
- 1 cup heavy whipping cream, cold
- ¼ cup powdered sugar
- ½ teaspoon vanilla extract
Instructions:
- Preheat oven to 350°F (175°C). Grease and flour a square baking pan (8x8 inch or similar size).
- Separate the egg whites from the yolks. In a large bowl, whisk the egg whites until frothy. Gradually add half of the granulated sugar (â…” cup) while whisking continuously, until stiff peaks form.
- In another bowl, whisk together the egg yolks, remaining sugar (â…“ cup), and vanilla extract until light and fluffy.
- Sift the flour, baking powder, and salt into a separate bowl. Gently fold the dry ingredients into the egg yolk mixture until just combined.
- Using a rubber spatula, gently fold the egg whites into the batter in three batches, until incorporated without over-mixing.
- Pour the batter into the prepared baking pan and bake for 20-25 minutes, or until a toothpick inserted into the centre comes out clean. Let the cake cool completely in the pan on a wire rack.
- While the cake cools, prepare the tapioca filling. In a saucepan, combine water, milk, tapioca pearls, and sugar. Bring to a boil over medium heat, stirring constantly.
- Reduce heat to low and simmer for 5-7 minutes, or until the tapioca pearls become translucent. Stir occasionally to prevent sticking.
- In a small bowl, whisk together the coconut milk and cornstarch. Slowly whisk this mixture into the tapioca mixture in the saucepan. Cook for 1 more minute, stirring constantly, until the mixture thickens.
- Remove the saucepan from heat and stir in the vanilla extract. Let the tapioca filling cool completely to room temperature.
- Once the cake and filling are cool, assemble the cake. Cut the cooled sponge cake in half horizontally to create two layers.
- Place one cake layer on a serving plate. Spread the cooled tapioca filling evenly over the cake layer. Top with the second cake layer.
- For frosting (optional): In a chilled bowl, whip the heavy cream with powdered sugar and vanilla extract until stiff peaks form. Spread the whipped cream frosting over the top of the assembled cake.
Nutritional Information:
(Please note that this is an approximate nutritional value per slice and can vary depending on the specific ingredients used.)
- Calories: 350-400
- Fat: 15-20g
- Saturated Fat: 10-15g
- Carbohydrates: 40-45g
- Sugar: 30-35g
- Protein: 5g
Tips:
- For a richer flavour, use full-fat coconut milk in the tapioca filling.
- You can substitute fresh tapioca pearls (uncooked) for instant tapioca pearls. However, the cooking time will increase to about 15-20 minutes. Be sure to follow the package instructions for cooking times.
- If you don't have whipped cream frosting, you can dust the top of the cake with powdered sugar or use a simple glaze made with powdered sugar and milk.
- This cake is best enjoyed chilled. Store leftovers in an airtight container in the refrigerator for up to 3 days.