Here is what I found on razzledazzlerecipes.com

Olive Garden Chocolate Lasagna

This was served at Olive Garden restaurant.

Pasta:
1-3/4 cup Flour
2 Tbsp Unsweetened cocoa powder
pinch of salt
2 extra large eggs
2 tsp vegetable oil

Filling:
4 cup Whole Milk Ricotta Cheese
2 cup heavy cream
6 Tbsp sugar
1 Tbsp orange zest
2 Tbsp Grand Marnier
a pinch of salt
12 oz bittersweet chocolate, chopped

Combine the flour, cocoa, and salt in a bowl and make a well in the
center. Add the eggs and oil in the center of the well and mix with a fork
to form the dough. Knead the dough for 15 minutes until it is smooth and
shiny, adding more flour if necessary to keep the dough from sticking.
Wrap in plastic wrap and let rest for half an hour. Roll the pasta out by
hand or with a machine and cut into eight 4-1/2 x 11-inch strips. Cook two
strips at a time in boiling salted water. Cook just 20 seconds after the
water returns to a boil. Plunge the noodles into cold water to stop the
cooking. When cooled, place on towels in a single layer to drain. Combine
all filling ingredients and mix until smooth. To assemble: Preheat oven to
425F with the rack in the upper third of the oven. Generously butter an
8"x11"x2" pan. Alternate layers of noodles, cheese filling, and chocolate,
ending with a cheese layer. Bake for 20-25 minutes until the top is
lightly colored. Let the lasagna stand for 10 minutes to solidify, then
serve warm.


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