Prepare the Cream Mixture: In a mixing bowl, beat the softened cream cheese until fluffy. Gradually add the powdered sugar and vanilla extract, mixing until well combined.
Whip the Cream: In a separate bowl, whip the heavy cream until stiff peaks form. Carefully fold the whipped cream into the cream cheese mixture until smooth and creamy.
Layer the Lasagna: In a rectangular dish (9x9 inches or similar), spread a layer of the crushed gingerbread cookies evenly at the bottom.
Pour half of the cream mixture over the gingerbread layer, smoothing it out with a spatula.
Sprinkle a layer of mini marshmallows, chocolate chips, and crushed peppermint candies over the cream layer, and dust with a pinch of cinnamon.
Repeat the layers: Add another layer of crushed gingerbread cookies, followed by the remaining cream mixture and toppings again (mini marshmallows, chocolate chips, and peppermint candies).
Chill: Cover the dish with plastic wrap and refrigerate for at least 4 hours or overnight to allow the layers to set.
Serve: Before serving, garnish with additional crushed peppermint candies on top for a festive touch.