Preheat the oven to 325 degrees F (165 degrees C). Melt butter in a medium bowl. Stir in 1 cup sugar and graham cracker crumbs until well combined. Press evenly into the bottom of a 9x13-inch baking dish.

Beat eggs in a large bowl. Beat in cream cheese, the remaining 1 cup sugar, and vanilla until smooth. Spread the mixture evenly over the crust.

Bake until the filling is just set in the center, 15 to 20 minutes. Cool completely.

Spread blueberry or cherry pie filling evenly over the cooled cheesecake layer. Spread whipped topping over the pie filling. Refrigerate until thoroughly chilled before serving.