Cook the lasagna noodles according to package directions and drain them; set aside.
In a mixing bowl, combine the mascarpone cheese, whipped cream, powdered sugar, vanilla extract, lemon zest, and ground cinnamon until smooth and creamy.
Spread a thin layer of the mascarpone mixture onto the bottom of a 9x13 inch dish, then place three cooked lasagna noodles on top.
Layer one-third of the mixed berries over the noodles, followed by another layer of the mascarpone mixture.
Repeat the layering process two more times, finishing with a final layer of the mascarpone mixture on top.
Cover and refrigerate the dessert lasagna for at least four hours, preferably overnight, to allow the flavors to meld and the structure to set.
Before serving, garnish with fresh mint leaves and additional mixed berries as desired.