01 - Set oven temperature to 350°F (175°C).
02 - In a bowl, combine flour, powdered sugar, and salt. Cut in cold butter until mixture resembles coarse crumbs. Add egg yolk and mix, adding cold water gradually until dough just holds together.
03 - Press dough evenly into a 9-inch tart pan with removable bottom. Prick the base with a fork and refrigerate for 15 minutes.
04 - Bake crust for 15 minutes until lightly golden. Remove from oven and allow to cool slightly.
05 - Combine cranberries, sugar, water, and orange zest in a saucepan. Simmer until cranberries burst and mixture thickens, about 8 minutes. Remove from heat and puree until smooth.
06 - In a bowl, whisk eggs, egg yolks, and flour. Gradually incorporate the cranberry puree, followed by melted butter and a pinch of salt, mixing until smooth.
07 - Pour filling into the pre-baked crust. Bake for 25 minutes until filling is set but slightly jiggly in the center.
08 - Allow tart to cool completely before removing from pan. Garnish with powdered sugar, fresh cranberries, and orange zest as desired.