Okay, so I searched for chess pie recipes and came up with one that looked plausible. It seemed very simple, beat eggs, sugar, cornmeal, butter, buttermilk, salt and vanilla extract together, place in an uncooked pie shell. Simple! Bake for 15 mins at 375F reduce to 350F bake another 20 mins. Ha!
The pie was hardly cooked by then but the top was already browning, so I reduced the heat to 325F and baked for another 40 minutes, finally done. It's cooling now on a wire rack -