Berry Tart with No Added Sugar

Whisk flour, cinnamon, and salt together in a large bowl. Cut butter into the flour mixture using a fork or a pastry blender until it resembles coarse meal or small peas. Sprinkle water over the flour mixture, 1 tablespoon at a time, and use a fork to pull the mixture together until a dough is formed.

Turn dough onto a lightly floured surface and work quickly to mold it into a large ball. Press into a 5-inch disc and wrap in plastic wrap. Refrigerate until cold, at least 30 minutes.

Preheat the oven to 400 degrees F (200 degrees C).

Roll cold dough onto a lightly floured surface into a large 14-inch circle with a thickness of 1/4 inch. Gently fold dough in half and transfer to a 10-inch tart pan. Unfold dough, press into the bottom and sides of the pan, and trim any extra dough to fit neatly. Prick dough with the tines of a fork and lay a sheet of parchment paper over top. Place pie weights or dried beans on top of the parchment paper.

Bake in the preheated oven for 20 minutes. Remove pie weights or beans and parchment paper, and bake until golden, 5 to 10 minutes longer. Remove from the oven and let cool.

Meanwhile, combine mascarpone cheese, cream, creme fraiche, and pudding mix for filling in a medium bowl. Beat with a whisk attachment until still peaks form. Fill cooled tart shell with filling, smoothing the top with a rubber spatula. Place berries in a decorative arrangement on top of filling. Refrigerate until ready to serve.