Preheat oven to 325°F (163°C). Grease a 9x13 inch baking pan.
In a mixing bowl, combine graham cracker crumbs, melted butter, and ¼ cup sugar. Press mixture into the bottom of the prepared pan.
Bake crust for 10 minutes. Remove from oven and let cool.
In a large bowl, beat cream cheese and 1 cup sugar until smooth. Add eggs, one at a time, beating well after each addition. Stir in lemon juice and lemon zest.
Pour filling over the cooled crust. Bake for 35 minutes or until the center is set.
Cool completely in the pan on a wire rack. Refrigerate for at least 2 hours before cutting into bars.