Cream the butter and sugar in a mixer. Add the yolks, then flour, then heavy cream until just incorporated. Remove from the mixer and wrap in plastic wrap and let rest refrigerated over night.
Roll out the dough on a lightly floured work surface to 1/4-inch thick. Use a round cutter to cut the dough to fit miniature tart molds that are 1 1/2 inches wide. Grease the molds with cooking spray and line the dough in the mold. Place on a sheet tray and bake in oven until golden.
Passion Fruit Mousse: Place the passion fruit puree, butter and eggs into a stainless steel saucepan over medium heat. Use a wooden spoon to stir until the mixture becomes slightly thick. Be careful not to scramble the eggs. Make sure to stir along the edges of the saucepan. Remove from the heat and add the soaked gelatin sheets. Strain the mixture into a stainless steel bowl and let cool. Whip the heavy cream until soft peaks form and fold into the cooled passion fruit mixture. Place mousse into a piping bag fitted with a small fluted tip and pipe into tart shells. You can decorate with fresh mint leaves or small pieces of colorful fruit. Chill until ready to serve.
Recipe courtesy of Chris Siversen, Executive Chef, Bridgewaters