This comforting Mom’s Flat Apple Pie is an easy sheet-pan version of a traditional double-crust apple pie. It features tender slices of Granny Smith apples layered over a crisp Corn Flakes base, all finished with a light, sweet glaze.
Mom’s Flat Apple Pie
Ingredients
For the Crust and Filling
| Ingredient | Quantity |
|---|---|
| All-purpose flour | 3 3/4 cups |
| Salt (for crust) | 3/4 teaspoon |
| Shortening | 1 1/2 cups |
| Egg yolk, plus milk | Enough liquid to equal 1 cup |
| Corn Flakes | 2–3 handfuls |
| Granny Smith apples, sliced and cored | 10 |
| Butter, cubed (for topping) | 4–8 tablespoons |
| Sugar (for filling) | 1 cup |
| Cinnamon | 1 teaspoon |
| Egg (for wash) | 1 |
| Sugar (for wash) | 1 teaspoon |
Thin Glaze
| Ingredient | Quantity |
|---|---|
| Powdered sugar | 2/3 cup |
| Vanilla extract | 2–3 dashes |
| Milk | Enough to make a thin glaze |
How to Make Mom’s Flat Apple Pie
Step 1: Make the dough
In a large bowl, mix together the flour, salt, and shortening. Add the egg yolk and enough milk to bring the total liquid to 1 cup. Combine until a smooth dough forms.
Step 2: Prepare the pan and base
Tip: A 15×10-inch baking sheet works best. Roll out half of the dough to fit the pan and gently press it into place.
Step 3: Layer the filling
Sprinkle 2–3 handfuls of Corn Flakes evenly over the crust. Arrange the sliced apples in an even layer on top.
Step 4: Add sugar and butter
In a small bowl, mix the sugar and cinnamon. Sprinkle this evenly over the apples, then dot with the cubed butter.
Step 5: Add the top crust
Roll out the remaining dough and place it over the apples. Seal and crimp the edges well.
Step 6: Egg wash and vent
Beat the egg with 1 teaspoon of sugar and brush it over the top crust. Cut several small slits to allow steam to escape during baking.
Step 7: Bake
Bake at 425°F for 25–30 minutes, or until the crust is golden brown.
Step 8: Glaze and serve
While the pie is still warm, mix the powdered sugar, vanilla, and enough milk to form a thin glaze. Drizzle it evenly over the pie, then slice and serve warm.
