Tempting Triple Chocolate Tiramisu

I've been making Tiramisu for years, trying
to come up with the best recipe I could.
With three times the chocolate,
this light recipe makes this traditional
Italian dessert better than ever.

Ingredients:
2 3-ounce packages ladyfingers, split
1/4 cup brewed espresso or strong coffee
1 8-ounce carton mascarpone cheese
1 cup whipping cream
1/4 cup powdered sugar
1 teaspoon vanilla extract
1/3 cup chocolate liqueur
1 ounce white chocolate baking squares or white baking bars, grated
1 ounce bittersweet chocolate, grated
Unsweetened cocoa powder
Chopped chocolate-covered coffee beans

Directions:
Line the bottom of an 8x8x2-inch baking pan
with some of the ladyfingers,
cutting to fit as necessary.
Drizzle half of the espresso
over ladyfingers and set aside.
In a medium mixing bowl,
beat together the mascarpone cheese,
whipping cream, powdered sugar,
and vanilla with an electric mixer
just until stiff peaks form.
Beat in the chocolate liqueur
until just combined.
Spoon half of the mascarpone mixture
over ladyfingers, spreading evenly.
Sprinkle white chocolate
and bittersweet chocolate
over the mascarpone mixture.
Top with another layer of ladyfingers
(reserve any remaining ladyfingers for another use).
Layer with remaining espresso
and mascarpone cheese mixture.
Cover and chill for 6 to 24 hours.
Sift cocoa powder over top of dessert.
If desired, garnish with cocoa beans.