Add the cornmeal, flour, sugar, and cinnamon to the bowl of a food processor. Pulse 1-2 times to mix well. Add the butter and pulse a few more times, until it forms a sandy-looking mixture, about 4 to 5 pulses.
Add the eggs and vinegar. Pulse and slowly add water until it forms a solid ball of dough, about 8 to 10 one-second pulses.
Dump the ball of dough out onto a well-floured counter or smooth surface. Roll dough out into a square large enough to fit your pan. About 1/8-1/4 inches thick is best.
Gently press pie crust into edges of a 10x15inch pan and cut off any excess dough. (Repair any tears with excess dough or roll out again for decorative leaf embellishment)
Bake for 8-10 minutes at 350°F, or until dough is set and not raw looking. Set aside.