Ingredients
Equipment
Method
- Preheat your oven to 375°F (190°C). Grease and flour a 9x13 inch baking pan. Alternatively, line the pan with parchment paper, leaving an overhang for easy removal.
- In a large bowl, whisk together the 1 ½ cups flour, ½ cup sugar, and ¼ teaspoon salt (for the crust).
- Add the ½ cup cold, cubed butter to the flour mixture. Use a pastry blender or your fingertips to cut the butter into the flour until the mixture resembles coarse crumbs.
- In a small bowl, whisk together the egg yolk and ice water.
- Pour the egg yolk mixture over the flour mixture.
- Use a fork to gently combine the wet and dry ingredients until the dough just comes together. Be careful not to overmix!
- Transfer the dough to the prepared baking pan. Use your fingers to evenly press the dough into the bottom of the pan, creating a solid crust.
- Bake the crust in the preheated oven for 12-15 minutes, or until it's lightly golden brown.
- While the crust is baking, prepare the peach filling. In a large bowl, combine the sliced peaches, ¼ cup sugar, cornstarch, lemon juice, cinnamon, and nutmeg (if using). Gently toss to coat the peaches evenly.
- In a medium bowl, combine the ½ cup flour and brown sugar (for the streusel).
- Add the ¼ cup cold, cubed butter to the flour mixture. Use a pastry blender or your fingertips to cut the butter into the flour until the mixture resembles coarse crumbs.
- Stir in the chopped pecans or walnuts, if using.
- Remove the par-baked crust from the oven.
- Pour the peach filling evenly over the crust.
- Sprinkle the streusel topping evenly over the peach filling.
- Bake the bars in the preheated oven for 30-35 minutes, or until the crust is golden brown and the peach filling is bubbly. If the streusel starts to brown too quickly, you can loosely tent the pan with foil for the last 10-15 minutes of baking.
- Let the bars cool completely in the pan before cutting into squares.
Notes
For best results, use cold butter and ice water to create a flaky crust. Don't overmix the dough to avoid a tough texture. Blanching the peaches makes peeling easier. Adjust the sugar in the filling based on the sweetness of the peaches. Cooling the bars completely before cutting ensures cleaner slices. Store the bars at room temperature for up to 3 days or in the refrigerator for up to 5 days. To freeze, wrap individual squares in plastic wrap and store in a freezer-safe container for up to 2 months. Thaw at room temperature before serving. For added flavor, consider adding a splash of amaretto liqueur to the peach filling or a pinch of ground ginger or cardamom.