Combine the flour, sugar, and salt in the bowl of a food process and pulse a few times to combine. Add the cold cubed butter and shortening, and pulse in short bursts until it’s cut into the dry ingredients and the mixture has the texture of coarse crumbs. Add the ice water and pulse in 5-second bursts, just until the dough starts to come together. Don’t overwork it!
Turn it out onto a lightly floured board and knead it just enough to incorporate any dry patches of flour. Wrap it well in plastic wrap and refrigerate it an hour to let it rest.
After an hour, roll the dough out on a lightly floured surface and press it into a 9-inch pie pan. Prick the bottom with fork tines, and put the pie in the freezer to chill for 15 minutes while you preheat the oven to 350 degrees F.
Once the oven’s ready and the dough is chilled, spray a piece of foil with nonstick spray and press it, sprayed side down, on top of the pie dough. Fill the pie shell with beans or rice, then bake it for 15 minutes until you see a little color on the sides of the crust. Carefully remove the foil and beans, then continue to bake the crust for an additional 15-20 minutes, until it is fully baked and golden brown. Cover the sides with foil if necessary to ensure the edges don’t burn. Let the crust cool completely before filling it.
To make the filling:
Combine the heavy cream, the lavender, the sugar, and the corn syrup in a small saucepan, and bring the cream to a boil. As soon as it boils, remove it from the heat and cover it with a lid to let the lavender flavor steep into the cream. Let it infuse for 10 minutes, then return the pan to the heat and bring it back to a boil.
Once the cream is again boiling, pour it through a mesh strainer into the bowl of chocolate, straining out the lavender pieces. Let the hot cream sit and soften the chocolate for 1 minute, then whisk everything together until the chocolate is melted and the mixture is shiny and smooth. Add the room temperature butter and whisk it into ganache.
Cool the mixture to room temperature, whisking occasionally to prevent a skin from forming on top. Once slightly thickened and at room temperature, pour it into the baked crust and refrigerate it until it’s firmly set, at least 4 hours. Garnish with cocoa whipped cream and crystallized lavender.
For the crystallized lavender:
Boil the lavender in water for 30 seconds, then strain. Pat the lavender mostly dry between layers of paper towel, then roll the slightly damp lavender in the granulated sugar. Separate into individual pieces and let them dry completely.
For the cocoa whipped cream:
Chill your mixing bowl and whisk attachment for 15 minutes before you're ready to use them. Pour the cream into the chilled bowl, then sift the powdered sugar and cocoa powder into the bowl. Whip on medium speed until firm peaks form, then use immediately.