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Mom’s Flat Apple Pie Recipe

4.6 from 66 reviews

Mom’s Flat Apple Pie is a delightful and easy-to-make dessert featuring a flaky homemade crust layered with crisp Granny Smith apples, cinnamon sugar, and a buttery topping. Finished with a smooth, sweet vanilla frosting drizzle, this pie offers a perfect balance of tart and sweet, ideal for family gatherings or cozy desserts.

Ingredients

Scale

Crust Ingredients

  • 3 ¾ cups all-purpose flour
  • ¾ teaspoon salt
  • 1 ½ cups shortening
  • 1 egg yolk, plus enough milk to make 1 cup of liquid

Filling Ingredients

  • 23 handfuls Corn Flakes
  • 10 Granny Smith apples, sliced and cored
  • 48 tablespoons butter, cubed
  • 1 cup sugar
  • 1 teaspoon cinnamon
  • 1 egg white
  • 1 teaspoon sugar (for brushing)

Thin Frosting Ingredients

  • ⅔ cup powdered sugar
  • 23 dashes vanilla extract
  • Milk, enough to make a thin frosting

Instructions

  1. Prepare the Crust: In a mixing bowl, combine the 3 ¾ cups of all-purpose flour, ¾ teaspoon salt, and 1 ½ cups shortening. Add the egg yolk and milk mixture (enough milk added to the egg yolk to total 1 cup liquid). Mix until the dough forms.
  2. Roll Out Dough: Divide the dough in half. Roll out half the dough to fit a 15×10-inch cookie sheet pan, ensuring it covers the entire pan surface evenly.
  3. Add Corn Flakes: Evenly sprinkle 2-3 handfuls of Corn Flakes over the rolled-out dough to add a crisp texture beneath the apples.
  4. Arrange Apples: Place the sliced and cored Granny Smith apples on top of the Corn Flakes layer.
  5. Add Sugar and Cinnamon: Mix 1 cup sugar with 1 teaspoon cinnamon and sprinkle evenly over the apples. Dot the top with 4-8 tablespoons of cubed butter for richness.
  6. Cover with Top Crust: Roll out the remaining half of the dough and place it over the apples to cover the filling completely.
  7. Prepare Egg Wash: Beat the egg white and 1 teaspoon sugar together. Brush this mixture over the top crust to give it a beautiful golden finish. Cut several slits in the top crust to allow steam to escape during baking.
  8. Bake the Pie: Preheat the oven to 425°F (220°C). Bake the pie on the cookie sheet for 25-30 minutes until the crust is golden brown and the filling is bubbling.
  9. Make and Add Frosting: While the pie is hot, mix ⅔ cup powdered sugar, 2-3 dashes of vanilla extract, and enough milk to create a thin frosting consistency. Drizzle this frosting evenly over the warm pie for a sweet finishing touch.

Notes

  • You can use 8-10 apples depending on their size; 8 were used in the test kitchen.
  • A 15×10-inch cookie sheet pan is ideal for this recipe.
  • Cutting slits in the top crust helps release steam and prevents sogginess.
  • The Corn Flakes add a unique crunch and help absorb excess juice from the apples.
  • Use Granny Smith apples for their tartness and ability to hold shape during baking.

Keywords: apple pie, flat apple pie, easy apple pie, homemade pie crust, fall dessert, cinnamon apple pie, baking