01 -
Beat eggs and 1/2 cup sugar in a mixer on medium-high speed until pale and tripled in volume, about 10 minutes. Gently fold in flour until just combined.
02 -
Divide batter evenly between two greased 9-inch round cake pans. Bake at 350°F (177°C) for 18–22 minutes or until a tester comes out clean. Let cakes cool completely, then slice each horizontally to make four thin layers.
03 -
Place one cake layer into each 9-inch springform or cake pan. Mix 1/2 cup boiling milk with 4 tablespoons sugar until dissolved. Brush the mixture over each base layer to soak. Spread 1/3 cup whipped topping evenly over each soaked layer.
04 -
Beat sour cream with 1 1/2 cups sugar on medium-high until fluffy, about 15 minutes. Add condensed milk and continue to beat until smooth.
05 -
In a saucepan, sprinkle gelatin over 1/2 cup milk. Allow to bloom for 5 minutes, then heat gently until dissolved. Add butter and whisk until melted and the mixture is smooth. Slowly blend the gelatin mixture into the sour cream blend until fully combined.
06 -
Divide the soufflé cream equally over the two prepared base layers. Gently spread to the edges and cover with remaining cake layers. Refrigerate each assembled cake for 3–4 hours until fully set.
07 -
Heat 1 cup heavy cream until steaming but not boiling. Pour hot cream over chocolate chips in a bowl. Let sit for 2 minutes, then whisk until smooth and glossy.
08 -
Pour ganache evenly over the chilled cakes. Refrigerate for at least 1 hour until the ganache is set.
09 -
Carefully remove cakes from pans. Slice and serve chilled, showcasing layers of light sponge, creamy soufflé, and chocolate ganache.