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1
Preheat the oven to 350 degrees F. Grease a 10-inch cake pan and line the bottom with parchment paper.
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2
Combine the 20 amaretti cookies and the chocolate in a food processor.
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3
Run the machine until the mixture is very finely minced.
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4
Set aside.
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5
Using an electric mixer and a large bowl, cream together the butter and sugar until pale yellow, about 2 minutes.
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6
Add the egg yolks 1 at a time, incorporating each yolk before adding the next.
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7
Once all the eggs are added continue to cream the mixture together until light and fluffy, about 4 more minutes.
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8
Add the orange liqueur.
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9
With the machine on low, add the flour and the chocolate amaretti mixture.
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10
Mix well after each addition.
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11
In medium bowl whip the egg whites using an electric mixer until stiff peaks form, about 3 minutes.
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12
Add 1/3 of the whipped egg whites into the cake mixture until well combined.
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13
Gently fold in the remaining whipped egg whites.
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14
Pour the batter into the prepared cake pan.
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15
Bake until a toothpick comes out clean, about 45 to 50 minutes.
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16
Let the cake cool in the pan on a wire rack for 10 minutes.
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17
Turn the cake out onto a platter and continue to cool to room temperature.
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18
Top with the orange marmalade in an even layer.
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19
Sprinkle the remaining crushed amaretti cookies over the top of the cake.
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20
Slice and serve.
