Preheat oven to 350 degrees F.
Slice the peaches and chop them into 1 inch pieces.
Add the peaches to a baking dish and sprinkle them with the flour, sugar, spice, lemon and bourbon. Allow the peaches to release their juices while you make the crumble topping.
In a separate bowl, make the crumb topping by combining all ingredients by blending with a pastry blender or fork until the mixture resembles small crumbs.
Gently stir the peaches to combine the flour, sugar, spices and the juice the peaches released.
Sprinkle topping evenly over the top.
Bake at 350 for 50-55 minutes or until golden brown and top is set.
Remove from oven and allow to cool for at least 10 minutes before serving.