Preheat oven to 375 degrees. Butter two 8-inch round cake pans. Line with parchment; butter parchment. In a food processor, process almonds and sugar to a powder. Sift together cornstarch, flour, baking powder, and salt.
In an electric mixer, beat 2 eggs with almond-sugar mixture on low speed until blended, about 1 minute. Add remaining eggs, one at a time, beating on high speed for 3 to 4 minutes and scraping down sides of bowl after each egg. Beat in liqueur.
Sprinkle cornstarch mixture over egg mixture; fold in. Fold in melted butter. Pour batter into prepared pans. Bake 15 minutes, rotate pans between oven shelves, and bake until cake tester inserted in the center of a cake comes out clean, 15 to 17 more minutes. Line two wire racks with parchment; spray paper with cooking spray. Turn cakes out of pans to cool on parchment-lined cooling racks for 45 minutes.
In a small saucepan, warm jam over low heat, stirring occasionally. Spread warm jam on one cake layer; top with second layer, and dust with confectioners' sugar. Decorate with marzipan if desired.
I made this torte yesterday. The batter was too thin!! I kept reading the dry ingredients over and over again to make sure i didn't make any mistake. First i decided to add some flour, but in the end I decided not to change anything. Unfortunately it ended up totally flat!!!Huge disappointment!
I made this torte on Christmas Eve, and it came out beautifully -- not overly sweet, and you can really taste the almonds in the cake. Since i didn't have a food processor or an electric mixer, i mixed everything in my blender. Worked like a charm!