Spray 9-inch tart pan with baking spray. Set aside.
In the bowl of a food processor fitted with the dough blade, combine flour, sugar, baking powder, and coconut.
Process to mix.
Add butter, a couple of slices at a time, pulsing after each.
Add egg yolks, and vanilla.
Pulse until dough comes together.
Turn out onto a piece of parchment paper.
Press into a circle.
Cover with another sheet of parchment.
Roll out into a circle that is ¼" thick.
Fit crust into tart pan, gently pressing out air bubbles.
Cover with plastic wrap.
Freeze for 15-20 minutes.
While crust is chilling, heat oven to 350° F.
Remove crust from freezer and bake until it just starts to develop a tiny bit of color, about 16 minutes.
Set aside to cool.