My Rhubarb Pie is packed with sweet-tart flavor and a flaky sour cream crust—an old-fashioned spring dessert that’s easier than you think.
Divide the dough in half and, on a floured surface, roll out one portion into a ⅛-inch (3 mm) thick circle.
Brush with egg wash and sprinkle with sugar, then cut slits in the top for venting.
Refrigerate the pie for 30 minutes while you preheat the oven to 400°F (200°C). Place a foil lined baking tray on the middle rack in the oven to pre-heat.
Bake the pie on the pre-heated tray for 55-60 minutes, or until the juices are bubbling and the crust is golden brown. (If the crust is browning too quickly, loosely tent with foil).
Cool for at least 4 hours before slicing to allow the filling to set.
Enjoy at room temperature with a dollop of whipped cream. Store leftovers loosely covered at room temperature overnight or refrigerate for up to 2 days.