Ingredients
Units
For the sponge cake:
- 1 pound of butter at room temperature
- 1 pound of powdered sugar sifted
- 250 grams of sifted cake flour
- 3 teaspoons baking powder
- 6 eggs, separated yolks, and whites
- 3 oranges, their zest, and the juice of an orange (1/2 cup of juice)
- 1 lemon, juice, and zest
Filling (orange curd):
- 3 oranges, zest, and juice (1 1/2 cups of juice)
- 6 eggs
- 500 grams of granulated sugar
- 125 grams of butter
Instructions
- Preheat the oven to 350F or 180C. Prepare three 8″ baking pans, put a circle of parchment paper at the bottom, and butter.
- Beat the egg whites to stiff peaks and reserve. Beat the butter with the sugar until it is creamy, and add the yolks one by one. Mixing entirely before adding the next one. Add the orange juice, the grated zest, and the lemon juice and its zest. Beat until incorporated. It will curdle.
- Add flour and baking powder, and mix thoroughly.
- Add the whites in 3 additions, incorporating enveloping movements to conserve the air trapped in the whites.
- Distribute the batter in the three prepared 8″ baking pans. You can weigh the mixture to make sure that all are equal.
- Bake for 25 – 30 minutes until they are golden brown, they have begun to separate from the edge, and when burying a toothpick, it comes out clean.
- Allow the layers to cool before unmolding and peel the paper and assemble the cake.
- For the filling: beat the orange juice with the eggs until incorporated, add the orange zest and the sugar, and finally, the butter cut into small pieces.
- Cook in a bain-marie until it thickens, frequently whisking for about 25 – 30 minutes. Allow cooling before assembling the cake. The filling can be done the day before and kept refrigerated.
- To assemble the cake, alternate layers of cake with layers of orange curd and finish covering the whole cake with orange curd.
- Keep refrigerated. Remove 30 minutes before serving or serve cold. It is better to make this cake the day before serving so that all the flavors develop.
Notes
If your orange curd doesn’t thicken, add 2 teaspoons of cornstarch dissolved in 1/4 cup cold water. Then you must cook the curd to boiling point so the cornstarch activates. Do this on the stove, but be careful not to burn the curd.
- Prep Time: 2 hours
- Cook Time: 1 hour
- Category: Cakes
- Method: Baked
- Cuisine: Chilean