To make the curst, whisk together the flour and salt. Mix the oil and milk together and then pour into the flour and stir until well combined. If it’s too dry, you can add more milk. Roll the crust out between two sheets of wax paper, and then line a pie pan with the crust.
Preheat the oven to 350° F.
To make the pie filling, on low heat melt the butter. Pour the butter into a mixing bowl and stir in the sugar. Beat the eggs with the corn meal, vanilla, lemon juice, and zest.
Add the egg mixture to the butter and sugar, and mix well. Pour the filling into the pie shell and bake for 50 minutes or until an inserted knife comes out clean.