Place egg yolks and whipping cream in a medium-sized mixing bowl.
Using the back of a knife, scrape the caviar from the vanilla bean. Add the caviar to the egg yolks and cream. Whip to combine and set aside.
In a large food processor, fitted with a dough blade, place flour, sugar, and salt. Blitz briefly to combine.
Set the food processor to low and add the butter to the flour mixture piece by piece. Blitz until the mixture resembles a coarse meal.
With the food processor still running, stream in the yolk/cream mixture. Blitz until a dough forms.
Turn the dough onto a well-floured surface. Divide the dough into two and form each half into discs. Wrap and freeze 1 half for later use. Place the other half in the fridge for 2 hours.
When thoroughly chilled, remove the dough from the fridge and let sit at room temperature for 15-20 minutes.
Place the dough on a well-floured surface, and roll it out to 1/8-inch thickness.
Cut the dough into six squares and fit them into 3-inch tart pans. Trim the edges and chill for 1 hour.
While the dough is chilling, preheat the oven to 400F.
Pierce the tart shells all over with a fork. Line the shells with a piece of parchment and place a handful of dried beans in the center.
Bake the shells for 15-20 minutes or until golden. Let cool completely before filling.