- 4 cups (500 g) Saskatoon berries - 3/4 cup (150 g) granulated sugar - 3 tbsp (24 g) all-purpose flour - 1 tbsp (15 ml) lemon juice - 1/2 tsp (1 g) ground cinnamon - Pinch salt - 2 tbsp (28 g) unsalted butter, cut into small pieces - 2 (9-inch) sheets flaky pie pastry, thawed - 1 large egg, approx. 50 g (for egg wash) - 1 tbsp (15 ml) water (for egg wash)
1. Preheat the oven to 375°F (190°C). Place a baking sheet on the middle rack. 2. In a large bowl, gently toss Saskatoon berries with sugar, flour, lemon juice, ground cinnamon, and a pinch of salt until evenly coated; let sit 10 minutes to macerate. 3. Roll out one sheet of flaky pie pastry and fit into a 9-inch (23 cm) pie dish, leaving a slight overhang. Spoon the berry filling into the crust and dot with pieces of butter. 4. Roll out the second pastry sheet and place over the filling. Trim excess, crimp edges to seal, and cut a few vents in the top crust to release steam. 5. Whisk the egg with water and brush the top crust lightly for a glossy finish. Optional: sprinkle a teaspoon of sugar on top. 6. Place the pie on the preheated baking sheet and bake 45–55 minutes, covering edges with foil after 30 minutes if they brown too quickly, until the filling is bubbling and crust is golden. 7. Cool on a rack at least 2 hours before slicing to allow the filling to set.
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