No-Bake Tiramisu Oreo Icebox Cake

Ingredients:

2 cups heavy whipping cream
1/4 cup powdered sugar
1 teaspoon vanilla extract
1 cup mascarpone cheese
1 cup brewed coffee, cooled
2 tablespoons coffee liqueur (optional)
1 package Oreo cookies (about 36 cookies)
Cocoa powder for dusting
Dark chocolate shavings for garnish (optional)
Directions:
continued on next page