Mix graham cracker crumbs, melted butter, and sugar for crust together in a bowl until combined. Transfer to a 10x14-inch glass pan and press to cover the bottom. Refrigerate for 30 minutes.
Preheat the oven to 350 degrees F (175 degrees C).
Combine cream cheese and sugar for cream cheese layer in a bowl. Blend with an electric mixer until smooth. Mix in vanilla and eggs, one at a time, until blended. Pour on top of the cooled crust.
Bake in the preheated oven until edges are puffed and surface of cheesecake is firm except for a small spot in the center that will jiggle when the pan is gently shaken, about 20 minutes. Remove from the oven and cool on a wire rack for 20 minutes.
Increase the oven temperature to 450 degrees F (230 degrees C).
Beat sour cream, sugar, and vanilla for sour cream layer in a bowl with an electric mixer until smooth. Pour on top of the cooled cheesecake.
Bake in the preheated oven for 10 minutes. Remove from the oven and sprinkle remaining graham cracker crumbs over top. Cool to room temperature, about 30 minutes, then cool in the refrigerator for at least 2 hours.