Torta della Nonna Toscana

Make the pasta frolla. Combine the flour and cold butter, working quickly until the mixture resembles coarse breadcrumbs. Add the sugar, then the eggs, and bring together into a smooth dough with minimal handling. Wrap in cling film and rest in the refrigerator for 1 hour. The dough must be cold and firm to the touch before rolling — a warm dough will collapse during baking.

Make the crema pasticcera. Whisk the egg yolks with the sugar until pale, then whisk in the 80 g of flour until fully incorporated. Warm the milk with the vanilla and lemon zest to a bare simmer, then pour onto the yolk mixture in a steady stream, whisking continuously. Return to the pan over medium heat and stir without pause until the cream thickens, boils briefly, and holds a peak when lifted on the spoon — this is the correct, higher-flour density required for a filled double-crust tart. Remove from the heat and press cling film directly against the surface to prevent a skin forming. Cool completely.

Preheat the oven to 180 °C. Divide the rested pastry into two pieces, one slightly larger than the other. Roll the larger piece to 3–4 mm and line a 24 cm tart tin, pressing into the edges without stretching. Line with baking paper, fill with baking weights, and blind-bake for 12 minutes. Remove the weights and paper; the base should appear set and dry to the sight — no raw-looking patches. This step is mandatory: the dense cream generates steam that renders an unbaked base permanently gummy.

Spoon the cooled crema pasticcera into the blind-baked shell, spreading it level. Roll the second pastry piece to the same thickness and lay it over the filling as the lid, pressing the edges to seal. Scatter the pine nuts evenly across the surface and press each one with the lightest possible touch — surface contact only. Pressed too deep, they will sink and burn. This is where the dish lives or dies: the density of the cream, the seal of the lid, and the placement of the pine nuts together determine whether the tart holds its structure and delivers its characteristic finish.

Bake at 180 °C for 35 to 40 minutes. The tart is done when the pastry is a uniform golden-brown, the pine nuts have toasted to a deeper amber, and the surface feels firm — not yielding — when pressed at the centre.

Remove from the oven and dust generously with powdered sugar while the tart is still warm. The residual heat causes the sugar to melt slightly into the pine nuts, forming the characteristic finish. Rest at room temperature for a minimum of 4 hours before serving — the crema firms fully and the pastry softens slightly against the filling. Serve at room temperature; do not serve cold.