Melt 60 g of butter in the microwave for 1 minute or on the stove. Allow it to cool to room temperature.
Separate the Eggs:
Separate the 4 eggs, placing the yolks in one bowl and the whites in another.
Prepare the Egg Yolks:
In the bowl with the egg yolks, add 150 g of sugar and 1 teaspoon of vanilla extract. Blend the mixture for 3-4 minutes until it becomes pale and creamy.
Whip the Egg Whites:
In a separate bowl, whip the egg whites until stiff peaks form. Set aside.
Preheat the Oven:
Preheat your oven to 160°C (320°F), using heat from both the top and bottom.
Combine the Ingredients:
Add 250 g of mascarpone to the egg yolk mixture and blend until smooth. Gradually add the melted butter and mix well.
Sift 120 g of flour into the mixture, stirring gently until just combined.