Make the Tart Dough – Blend flour, sugar, and butter in a food processor. Add egg yolk and water until dough forms. Chill for 30 minutes.
Bake the Tart Shells – Roll and cut dough into small rounds, press into mini tart molds, and bake at 350°F (175°C) for 12–15 minutes. Cool completely.
Prepare the Lemon Curd – Heat lemon juice, zest, sugar, and egg yolks over a double boiler, stirring until thickened. Remove from heat and whisk in butter. Strain and chill.
Assemble the Tarts – Fill the tart shells with lemon curd, top each with a raspberry, and dust with powdered sugar.
Serve & Enjoy – Refrigerate until ready to serve. Enjoy chilled or at room temperature.