Rinse and drain raspberries, set aside.
Rinse and drain blueberries, set aside.
In the bowl of a stand mixer, place the whipped topping, mascarpone cheese, and vanilla pudding mix.
Mix on low speed to combine and form a thick, creamy mixture.
Spread ⅓ of the creamy mixture in the bottom of a springform pan to completely cover the bottom.
Place a layer of lemon sandwich cookies on top of the filling. (About 24 cookies)
Sprinkle on the raspberries, then spread the raspberry jam in a layer to the edges of the pan.
Spread ⅓ of the creamy mixture over the raspberry layer.
Add another layer of lemon sandwich cookies.
Sprinkle on the blueberries, then spread the blueberry jam in a layer to the edges of the pan.
Spread the final ⅓ of the creamy mixture over the blueberry layer.
Top with grated lemon zest and fresh blueberries.
Place the pan on a large (bigger than the springform pan) cake plate.
Chill overnight or for about 8 hours.
Remove from the refrigerator and remove the springform pan. Slice and serve. Makes 12 servings.