Preheat the oven to 375 degrees F (190 degrees C).
In a medium bowl, combine the blueberries, strawberries, raspberries, blackberries, sugar, and lemon juice. Mix until all ingredients are evenly distributed.
In a separate bowl, beat the cream cheese, confectioners' sugar, and vanilla extract until light and fluffy.
Spread the cream cheese mixture into the bottom of the graham cracker crust.
Pour the berry mixture into the crust over the cream cheese layer.
Bake in the preheated oven for 20 minutes.
Allow to cool before serving.
Interesting Facts
The key to a perfect berry surprise is to use the freshest berries you can find.
The cream cheese layer helps to keep the berries from sinking to the bottom.
This recipe can also be served as a chilled dessert.