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1
Preheat the oven to 350*F. Grease a 10-inch cake pan and line the bottom with a circle of parchement paper.
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2
Combine the 20 amaretti cookies and the chocolate chips in a food processor and process until the mixture is very finely chopped.
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3
Set Aside.
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4
Using an electric mixer and a large bowl, cream together the butter and sugar for 2 minutes.
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5
Add the egg yolks one at a time, incorporating each yolk before adding the next.
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6
Once all the eggs are added, continue to cream the mixture together until light and fluffy, about 4 minutes.
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7
Add the orange liqueur.
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8
With the machine on low, add the flour and the chocolate amaretti mixture, mixing well after each addition.
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9
In a medium bowl, whip the egg whites (using an electric mixer and clean beaters) until stiff peaks form, about 3 minutes.
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10
Add one third of the whipped egg whites to the batter and mix until combined.
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11
Gently fold the remaining egg whites into the batter until just combined.
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12
Pour the batter into the prepared cake pan.
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13
Bake 45-50 minutes.
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14
Let the cake cool for 10 minutes, then turn the cake out onto a platter and cool to room temperature.
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15
Spread the orange marmalade over the top of the cake in an even layer and sprinkle the 8 crushed amaretti cookies on top.
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16
Serve.
