Melt ½ cup of butter in a 13- x 9-inch baking dish
Combine 1 cup flour, 1 cup sugar, 1 tablespoon baking powder, 3 tablespoons Bird Dog Peach Whiskey, and a pinch of salt
Add 1 cup of milk, stirring just until dry ingredients are moistened
Pour batter over butter (do not stir)
Bring 1 cup sugar, 4 cups peach slices, and 1 tablespoon lemon juice to a boil over high heat, stirring constantly
Pour over batter (do not stir)
Sprinkle with cinnamon, if desired
Mix brown sugar, oats, and bourbon together to make a crumble topping, then sprinkle over the top.
Bake at 375° for 40 to 45 minutes or until golden brown