Whisk egg yolk, cream and vanilla together in bowl. Process flour, sugar and salt in food processor until combined (about 5 seconds). Scatter butter over top and pulse until mixture resembles coarse cornmeal., about 15 pulses. With processor running, slowly add egg yolk mixture and process until dough just comes together, about 12 seconds.
Turn out dough onto sheet of plastic wrap. Form dough into 6-inch disk, wrap tightly in plastic, and refrigerate for 1 hour. Let dough sit on counter to soften slightly, about 10 minutes, before rolling. (Wrapped dough can be refrigerated for up to 2 days or frozen for up to 1 month. If frozen, let dough thaw completely on counter before rolling.)
Roll dough into 11-inch circle on lightly floured counter. (If dough becomes too soft and sticky to work with, transfer to baking sheet and refrigerate for 10 minutes.) Place dough round on baking sheet, cover with plastic, and refrigerate for about 30 minutes.
Remove dough from refrigerator but keep dough on sheet. Loosely roll dougy around rolling pin and gently unroll into 9-inch tart pan with removable bottom, letting excess dough hang over edge. Ease dough into pan by gently lifting edge of dough with your hand while pressing into corners with your other hand.
Press dough into fluted sides of pan, forming a distinct seam around pan's circumference. (finished edge should be 1/4 inch thick. If some sections are too thick, press dough up over edge.) Run rolling pin or knife over top of pan to remove any excess dough. Wrap dough-lined pan loosely in plastic, place on large plate, and freeze until dough is firm, about 30 minutes before using. (Dough-lined pan can be wrapped tightly in plastic and frozen for up to 1 month.)
Adjust oven rack to middle position and heat oven to 375º. Set dough-lined pan on rimmed paking sheet. Line chilled tart shell with parchment paper or double layer of aluminum foil, covering edges to prevent burning , and fill with pie weights. Bake until tart shell is golden brown and set, about 30 minutes, rotating pan halfway through baking. Transfer sheet to wire rack and carefully remove foil and weights. Let tart shell cool on sheet while preparing filling.