Combine two summer favorites into one delicious dessert. This treat is part peach pie and part peach crumble, all in one. The brown sugar and oat topping is the perfect compliment to the yummy peach filling.
Preheat oven to 375℉ and fit pie crust in a 9-inch deep dish pie plate. Refrigerate until ready to use.
In a large bowl, stir together the ⅓ cup granulated sugar, ¼ cup light brown sugar, ½ cup all-purpose flour, and ½ teaspoon ground cinnamon.
Add the 5 cup peach slices and toss to combine. Let sit while you prepare the crumb topping.
In a small bowl, stir together the ¼ cup old fashioned oats, 3 Tablespoons light brown sugar2 Tablespoons all-purpose flour, and ½ teaspoon ground cinnamon.
Add the 3 Tablespoons butter and work in until clumpy and combined.
Transfer the peach mixture to the chilled pie crust. Top with crumble topping.
Place pie plate on a baking sheet to catch anything that may bubble over. Bake for 40-50 minutes. Keep and eye on the crust and cover the edges if needed.
Remove from oven and cool for at least 2 hours to thicken before serving.
Keep the pie loosely covered in the refrigerator for up to 5 days.
Notes
If using fresh peaches, it will take about 7 peaches. Peel, pit, and slice them before using.
If using frozen peaches, defrost the sliced peaches and pour off any extra liquid. Do not press them to release more juice.
If using canned peaches, you'll want to use three 15 oz cans. Drain them well before using.
You can add vanilla and/or nutmeg to the filling if you would like.
You can also add a couple of Tablespoons of chopped nuts to the topping if desired.