01 -
Set oven to 350°F (175°C). In a mixing bowl, combine all-purpose flour and granulated sugar to ensure even distribution for the crust.
02 -
Incorporate cold, cubed unsalted butter into the flour and sugar blend until the mixture becomes crumbly, creating flakes in the crust.
03 -
Mix in the egg yolk and 2 to 3 tablespoons of cold water, stirring gently until dough just comes together without overworking.
04 -
Press dough evenly into a tart pan and lightly prick the base with a fork. Bake 18 to 20 minutes until lightly golden. Cool completely before filling.
05 -
Whisk mascarpone cheese, heavy cream, powdered sugar, vanilla extract, and lemon zest until smooth and slightly thickened for a luscious filling.
06 -
Spread the mascarpone cream evenly over the cooled crust. Neatly arrange fresh raspberries on top for balanced flavor and appearance.
07 -
Warm raspberry jam gently and brush lightly over raspberries to add shine and a touch of sweetness, if desired.
08 -
Refrigerate assembled tart for at least one hour to meld flavors and set the filling. Serve chilled for optimal texture and taste.