Adding maple and bourbon makes this is ultimate peach crumble
Cut the peaches into 1/4 inch thick slices, remove the pit but leave the skin on.
Place the peach slices in a large bowl and add the sugar, maple syrup, bourbon, flour, cornstarch, cinnamon, and kosher salt. Gently toss until evenly mixed.
Spray a 9x13 dish with cooking spray. Add the peach filling.
Make the crumble topping by combining the melted butter, flour, pecan pieces, sugar, brown sugar, and salt. Stir until evenly mixed. Crumble it evenly over top of the peach filling.
Bake in a 375 degree oven for 45 minutes.
Let cool slightly before serving.