Argentine Roasted Pecan and Dulce de Leche Tarta with Spiced Orange Crust

What Makes This Special

The crust is a pâte sucrée spiked with orange zest and ground pecans, carrying texture and autumn aroma. The filling is a thick, classic Argentine dulce de leche, topped with roasted pecans caramelized in butter and sugar, referencing Thanksgiving and local harvest. All color is natural, from orange zest and caramelization. The method is time-intensive due to dough resting and cooling, not active preparation.

Ingredients

Precision is critical. Each component builds a layered texture—short crust, sticky center, crisp top. The orange, cinnamon, and pecan ground into the dough make the base a carrier of autumn, not just a container.

For the Spiced Orange Pecan Pâte Sucrée

• 200 g plain flour: structure
• 100 g cold unsalted butter, cubed: fat for tenderness and flakiness
• 75 g icing sugar: sweetness and fine crumb
• 30 g ground pecans: flavor and texture
• zest of 1 orange (approx. 6 g): aromatic oil for autumn color and scent
• 1 g ground cinnamon: warmth and complexity
• 1 large egg (approx. 50 g): binds dough
• pinch salt (1 g): balance

For the Roasted Pecan Topping

• 100 g whole pecans: for crunch and visible topping
• 30 g granulated sugar: caramelizes the nuts
• 10 g unsalted butter: assists even roasting

For the Filling

• 350 g thick Argentine dulce de leche: sweet, sticky center

Optional Garnishes

• 2 g flake sea salt: enhances contrast
• 50 g candied orange peel: sharpness and color

Instructions

Step 1: Make and Rest the Pâte Sucrée

Combine flour, icing sugar, ground pecans, cinnamon, and salt in a stand mixer. Add cold butter and mix with paddle on low until texture is sandy, with some pieces of butter visible. Add orange zest. Mix in egg just until dough comes together. Do not overwork; gluten must remain minimal to keep crust tender. Turn onto counter, shape into a disc, wrap in plastic. Refrigerate at least 2 hours (overnight preferred). This rest lets the flour absorb moisture and butter solidify, ensuring a crisp shell.

Step 2: Roll, Line, and Chill Tart Shell

Remove dough from fridge. Let soften for 5–10 minutes, then roll on floured counter to 3 mm thickness, rotating often to prevent sticking. Drape into 23 cm tart tin, pressing into edges. Trim excess. Dock base with a fork. Freeze 30 minutes. This prevents shrinkage and maintains shape during baking.

Step 3: Blind-Bake the Shell

Heat oven to 175°C (fan off). Line shell with parchment and baking beans. Bake 18 minutes. Remove beans and parchment, bake 7–9 minutes more until golden and dry. Cool completely on rack. Shell must be fully baked before filling or it will become soggy.

Step 4: Roast the Pecans

Spread pecans on baking sheet. Toss with 10 g melted butter and 30 g sugar. Roast at 175°C for 10–12 minutes, stirring halfway, until deep golden and fragrant. Cool, then rough-chop half; leave rest whole for topping. Roasting drives off water, deepens flavor, and caramelizes the sugar.

Step 5: Fill and Set

Spread dulce de leche (350 g) evenly in cooled shell. Warm it briefly if too stiff, but do not pour hot filling into shell. Scatter chopped roasted pecans over surface. Press lightly to embed. Arrange whole pecans decoratively. Optionally, scatter candied orange peel. Chill tart 2 hours to set filling for clean slicing.

Step 6: Finish and Serve

Just before serving, sprinkle with flake sea salt if using. Slice with a hot knife (dip in boiling water, dry) for clean cuts. Serve at room temperature for maximal contrast between crisp shell and sticky filling.

Pro Tips

• Keep butter cold during dough mixing; melting produces tough crust.
• Dock and freeze tart shell before baking; this prevents puffing and shrinkage.
• Warm the dulce de leche slightly for easy spreading, but do not let it become runny; it must be thick to hold shape.

Troubleshooting

Crust shrank or cracked? Not enough chilling. Freeze the lined dough to set structure before baking.

Dulce de leche runny? Use a thick Argentine style. If only thinner milk caramel is available, cook gently in a pan to reduce moisture before filling.

Pecans burnt? Check oven calibration. Stir nuts halfway for even caramelization, and pull them at golden, not dark brown.

Variations

• Substitute walnuts for pecans for a more bitter, earthy profile.
• Add a thin layer of melted dark chocolate (50 g) under the dulce de leche for contrast.
• Infuse tart dough with finely diced crystallized ginger instead of orange for sharper spice.

Storage

Store covered at room temperature for up to 24 hours. For longer storage, refrigerate up to 3 days; expect crust to soften slightly. Pecans lose crunch after a day—refresh under grill if desired.