Preheat the oven to 350°F (175°C) and place a rimmed baking sheet on the middle rack.
In a large bowl, whisk together the melted butter, granulated sugar, cornmeal, and fine sea salt until smooth.
Add the honey and vanilla extract, whisking until fully incorporated.
Add the eggs one at a time, whisking well after each addition to ensure a smooth emulsion.
Stir in the heavy cream slowly until the filling is homogenous.
Place the unbaked pie crust on the preheated baking sheet.
Pour the honey mixture into the crust, filling it nearly to the top.
Bake for 45 to 50 minutes, or until the edges are golden brown and puffed, and the center has a slight, uniform jiggle.
Remove from the oven and allow the pie to cool completely at room temperature for at least 4 hours to set the custard.
Sprinkle the surface evenly with flaky sea salt before slicing.