01 - Beat softened cream cheese in a medium bowl until smooth. Add powdered sugar and vanilla extract, beating until fully incorporated. Gently fold in whipped topping until mixture reaches creamy, smooth consistency.
02 - Sprinkle an even layer of crushed shortbread cookies across the bottom of a glass trifle bowl or individual serving cups.
03 - Spread a generous layer of the whipped cheese mixture over the cookie base, ensuring even coverage.
04 - Arrange sliced strawberries and blueberries in an even layer atop the filling mixture.
05 - Repeat layering sequence: crushed cookies, whipped filling, and mixed berries until all ingredients are used, ensuring the final layer consists of fresh berries for visual appeal.
06 - Top with additional fresh berries and mint leaves if desired. Refrigerate for at least 1 hour to allow flavors to meld and layers to set before serving.