Chocolate and Orange Tiramisu

Stir mascarpone and 2 tablespoons orange liqueur together in a large bowl until smooth. Set aside.

Beat cream, sugar, and vanilla together with an electric mixer in a separate bowl until soft peaks form. Fold about 1/4 of cream into mascarpone mixture with a large rubber spatula until smooth. Add remaining 3/4 of whipped cream and fold until smooth and well combined.

Mix orange juice and remaining 2 tablespoons of orange-flavored liqueur together in a shallow bowl. Separate ladyfingers. Quickly dip two or three ladyfingers at a time in orange juice mixture just long enough to absorb a small amount of liquid. Arrange soaked cookies in the bottom of a 9x13-inch baking dish.

Repeat soaking and placing cookies until the bottom of the dish is covered in a single layer. Spread about 1/2 the mascarpone mixture over cookie layer. Sprinkle about 1/2 the cocoa powder over mascarpone. Repeat soaking and layering with remaining cookies, orange juice mixture, mascarpone mixture, and cocoa powder.

Cover baking dish with plastic wrap and refrigerate until set, at least 5 hours to overnight.