Ingredients:

  • 2 cups (250g) all-purpose flour
  • 1 cup (90g) rolled oats
  • ¾ cup (150g) brown sugar, packed
  • 1 cup (225g) unsalted butter, cold and cubed
  • ½ tsp (3g) salt
  • 4 cups (600g) fresh peaches, peeled and diced
  • ½ cup (100g) granulated sugar
  • 2 tbsp (16g) cornstarch
  • 1 tbsp (15ml) lemon juice
  • 1 tsp (2g) ground cinnamon
  • ¼ tsp (1g) ground nutmeg

Instructions:

  1. Preheat your oven to 350°F (175°C) and line a 9x9 inch baking pan with parchment paper, leaving an overhang on the sides for easy removal.
  2. In a large bowl, combine flour, oats, brown sugar, and salt.
  3. Cut in the cold butter using a pastry cutter or food processor until the mixture resembles coarse crumbs.
  4. Reserve 1 cup (120g) of the mixture for the topping.
  5. Press the remaining dough firmly and evenly into the bottom of the prepared pan.
  6. In a medium bowl, toss the diced peaches with granulated sugar, cornstarch, lemon juice, cinnamon, and nutmeg.
  7. Stir gently until the fruit is evenly coated and the cornstarch has dissolved into the juices.
  8. Spread the peach mixture evenly over the pressed crust.
  9. Sprinkle the reserved crumble mixture over the peaches, leaving some fruit peeking through for a rustic look.
  10. Bake for 40–45 minutes until the edges are a deep mahogany brown and the peach filling is bubbling and set.
  11. Cool completely in the pan for at least 1 hour before slicing to ensure the bars hold their shape.