Prebake the crust according to the directions on the package.
Crust should cool to room temperature before filling.
Reduce oven temp to 350℉.
Prepare The Filling
In large bowl whisk together the sugar and cornmeal.
In large bowl whisk together the eggs, melted butter, heavy cream, mashed raspberries, vanilla extract, and raspberry extract (optional).
Add the liquid ingredients to the dry ingredients and mix thoroughly with a spoon or spatula. If the mixture is too thick you can use an electric mixer but it's not normally necessary.
Spoon the mixture into the cooled pie crust.
Bake
Bake on middle rack at 350℉ for 40-45 minutes.
Pie done when the center is firmly set and not jiggly.
Cool
Allow to sit on wire cooling rack until room temperature. This normally takes about 2 hours.