In a mixing bowl, combine graham cracker crumbs, melted butter, and ¼ cup sugar. Press mixture into the bottom of a 9x13 baking pan.
Bake crust for 10 minutes. Remove from oven and let cool.
In a large mixing bowl, beat cream cheese and 1 cup sugar until smooth. Add eggs one at a time, beating well after each addition. Stir in vanilla extract.
Pour cream cheese mixture over the cooled crust. Sprinkle mixed berries evenly over the top.
Bake for 35 minutes or until the center is set. Let cool completely before cutting into bars.