Preheat oven to 375°F. Line a sheet pan with parchment paper.
Roll out one half (see Note) of the prepared pie dough on a lightly floured surface, into a rough 15-inch circle. Transfer to a 9-inch pie dish and trim edges to a 1-inch overhang. Tuck overhang under and use your thumb and finger to create a crimped edge. Brush edges with the egg wash. To make the topping, combine the oats, flour, sugar, salt, cinnamon and pecans in a bowl. Add the cubed butter and use a pastry blender or a fork to cut the butter into the dry ingredients until the butter is the size of small peas. To make the filling, toss together the apples, sugar, flour, and cinnamon. Dump into the prepared pie crust. Sprinkle the topping over the pie filling.
Place pie on the prepared sheet pan and bake for 50-60 minutes, until topping is golden brown and the filling is bubbling. If the topping and crust browns too quickly, cover with foil for the remainder of the baking time.
Let the pie cool at least 20 minutes before serving to finish setting up. Serve warm or cool. Top with whipped cream or ice cream, if desired.
- For step-by-step photos and tips, see my tutorial on how to make perfect flaky pie crust.
- This recipe only requires one half of the the pie crust recipe. Reserve the other half for a later use. Store tightly wrapped in plastic, in the fridge for up 1 week and in the freezer for up to 3 months.
Calories: 222kcal, Carbohydrates: 32g, Protein: 3g, Fat: 10g, Saturated Fat: 4g, Cholesterol: 22mg, Sodium: 87mg, Potassium: 104mg, Fiber: 2g, Sugar: 18g, Vitamin A: 171IU, Vitamin C: 2mg, Calcium: 18mg, Iron: 1mg