Peach Streusel Slab Pie

My mother has a peach tree in her backyard that produces a bumper crop of fruit during the month of July. There are so many peaches on the tree, that I can’t keep up with the constant supply she gives me. I find myself whipping up one peach dish after the next. Of course, you can always eat them straight off the tree or slice them into a dish, topped with a sprinkle of cinnamon, or a dollop of whipped cream. I also love combining this fabulous stone fruit with fresh blueberries or blackberries. This peach slab pie has become one of my favorite summer desserts. I love the layers of crust, fruit, and topping. It’s the ultimate summer dessert and it always reminds me of my mom and her amazing fruit tree! (If you want more peachy ideas, I have a recipe for Peach Crisp here!

Ingredients

Dough:

2 sticks (1 cup) unsalted butter, at room temperature and cut into small pieces, plus more for greasing the baking sheet

3 cups all-purpose flour

2/3 cup confectioners’ sugar

1/2 teaspoon kosher salt

Filling:

3 pounds peaches (about 6 peaches), cut into 1/2-inch wedges

1 1/2 cups firmly packed light brown sugar

Juice of 1 lemon

3 tablespoons cornstarch

2 teaspoons pure vanilla extract

1 teaspoon ground cinnamon

1/2 teaspoon kosher salt

1/4 teaspoon freshly grated nutmeg

Streusel:

3/4 cup all-purpose flour

1/2 cup sliced skin-on almonds

1/2 cup firmly packed light brown sugar

6 tablespoons unsalted butter, melted

1/4 teaspoon kosher salt

Special equipment:

A rimmed 10-by-15-inch baking sheet

Adjust a rack to the bottom third of the oven and preheat the oven to 375 degrees F. Grease the bottom and sides of a rimmed 10-by-15-inch baking sheet with butter.
For the dough: Combine the butter, flour, confectioners’ sugar, and salt in a food processor and process until the mixture comes together in a solid mass (this may take a few minutes). Drop pieces of the dough all over the prepared baking sheet. Use your fingers to press the dough evenly along the bottom and about 1/2 inch up the sides of the pan, filling any gaps. Set aside.
For the filling: Toss together the peaches, brown sugar, lemon juice, cornstarch, vanilla, cinnamon, salt, and nutmeg in a large bowl until the cornstarch dissolves. Transfer the filling onto the crust and spread in an even layer. Bake for 30 minutes.
For the streusel: While the pie bakes, make the streusel topping by combining the flour, almonds, brown sugar, melted butter, and salt in a small bowl until evenly moistened.
Remove the pie from the oven and sprinkle the streusel evenly over the filling. Return the pie to the oven and bake until the topping is golden brown and the filling is bubbly, 25 to 30 minutes more. (If the crust browns too quickly during baking, cover the pie loosely with foil.)
Let the pie cool. Serve warm or at room temperature.