Old-Fashioned Apple Pie with Oat Crumble Topping

Ingredients

• 10 tablespoons Unsalted butter (cold) (cut into small pieces)
• 1 cup All‑purpose flour (for crumble topping)
• 1 cup Old‑fashioned rolled oats (not quick‑cooking)
• 0.5 cup Light brown sugar (packed)
• 0.5 teaspoon Kosher salt
• 1 teaspoon Ground cinnamon
• 3 pounds Granny Smith apples (peeled and sliced ~½‑inch)
• 0.5 cup Light brown sugar (filling) (packed)
• 2 teaspoons Ground cinnamon (filling)
• 0.25 teaspoon Kosher salt (filling)
• 3 tablespoons Cornstarch (thickener)
• 1 teaspoon Vanilla extract
• 2 teaspoons Apple cider vinegar
• 2 tablespoons Unsalted butter (for dotting) (cut into small pieces)
• 1 portion Pre‑made flaky pie crust (Dessert Person) (enough for a 9‑10 inch pie)

Instructions

1. Make the crumble topping

   In a mixing bowl combine the cold butter pieces, 1 cup flour, 1 cup rolled oats, ½ cup packed light brown sugar, ½ tsp kosher salt, and 1 tsp ground cinnamon. Using your fingertips, rub the butter into the dry ingredients until the mixture resembles coarse crumbs with no visible butter pieces.

   Time: PT10M

2. Chill the crumble

   Transfer the crumble mixture to a piece of plastic wrap, form into a disc, and refrigerate for at least 15 minutes.

   Time: PT15M

3. Prepare the apples

   Peel all 3 lb of Granny Smith apples, then slice them into half‑inch thick pieces. Place the slices in a large bowl.

   Time: PT10M

4. Season the apple filling

   To the sliced apples add ½ cup light brown sugar, 2 tsp ground cinnamon, ¼ tsp kosher salt, 3 tbsp cornstarch, 1 tsp vanilla extract, and 2 tsp apple cider vinegar. Toss gently until the apples are evenly coated.

   Time: PT5M

5. Roll out the bottom crust

   Lightly flour a work surface and your rolling pin. Gently thwack the pre‑made flaky crust to soften it, then roll it into a 9‑10 inch circle. Transfer to the pie plate, allowing the dough to naturally drape over the sides. Trim excess dough, tuck the overhang under to create a double‑thick lip, and press the edges firmly against the side of the plate.

   Time: PT10M

6. Assemble the pie

   Arrange the coated apple slices evenly in the crust, pressing a few pieces into the bottom‑side junction to avoid gaps. Dot the fruit with the 2 tbsp of cold butter pieces. Sprinkle the chilled crumble evenly over the top.

   Time: PT5M

7. Bake – initial high heat

   Place the pie on a baking sheet and bake in a pre‑heated oven at 400°F for 20 minutes. This burst of heat sets the crust edge.

   Time: PT20M

   Temperature: 400°F

8. Bake – finish at lower temperature

   Reduce the oven temperature to 350°F and continue baking for about 1 hour, or until the apple juices are bubbling around the crust edge and the crumble is golden brown.

   Time: PT1H

   Temperature: 350°F

9. Cool the pie

   Remove the pie from the oven and let it cool completely on a rack before slicing. For best texture, bake the night before and serve chilled or at room temperature.

   Time: PT30M

Nutrition Facts

Calories

340

Protein

2 g

Carbohydrates

55 g

Fat

12 g

Fiber

3 g

Ingredient Substitutions

• Instead of Unsalted butter (cold): cold margarine
• Instead of All‑purpose flour: whole‑wheat flour (will change texture)
• Instead of Old‑fashioned rolled oats: quick oats (will be softer)
• Instead of Light brown sugar: dark brown sugar, granulated sugar + molasses
• Instead of Kosher salt: table salt (use 1/3 amount)
• Instead of Ground cinnamon: ground nutmeg, pumpkin pie spice
• Instead of Granny Smith apples: other tart apples such as Braeburn or Pink Lady
• Instead of Light brown sugar (filling): dark brown sugar
• Instead of Ground cinnamon (filling): ground nutmeg
• Instead of Kosher salt (filling): table salt (use 1/3 amount)
• Instead of Cornstarch: arrowroot powder, flour (double amount)
• Instead of Vanilla extract: almond extract (use half)
• Instead of Apple cider vinegar: lemon juice
• Instead of Unsalted butter (for dotting): cold margarine
• Instead of Pre‑made flaky pie crust (Dessert Person): homemade pie dough

Equipment Needed

• Rolling pin
• Vegetable peeler
• 9‑10 inch pie plate (porcelain)
• Mixing bowls
• Measuring cups and spoons
• Oven
• Baking sheet
• Cooling rack (optional)
• Serrated knife
• Offset spatula or pie server (optional)
• Cutting board
• Plastic wrap (for chilling crumble) (optional)
• Oven mitts

Critical Steps — Do Not Skip

• Incorporate cold butter into the crumble until no visible pieces remain.
• Keep the crumble mixture chilled before using.
• Handle the flaky crust gently; do not over‑stretch.
• Dot the apple filling with butter for richness.
• Start baking at 400°F then reduce to 350°F for even browning.

Chef Tips from the Video

• Use tart Granny Smith apples for the best flavor balance.
• Keep all butter cold until the moment you work with it; it creates a flaky texture.
• If the crumble looks too soft while mixing, chill it for 5 minutes before finishing.
• A light drizzle of melted butter over the crumble before baking gives extra gloss.

Troubleshooting

Storage

Refrigerator: Cover tightly with plastic wrap; lasts up to 4 days.

Freezer: Wrap the whole pie in foil and then a freezer bag; up to 2 months.

Room temperature: Can sit at room temperature for up to 2 hours after baking.

Make-Ahead Tips

• Prepare the crumble and keep it refrigerated for up to 2 days.
• The crust can be rolled out and frozen; bake from frozen, adding 10 minutes to the bake time.
• Assemble the pie the night before; bake fresh the next day.