Preheat the oven to 350 degrees F.
Mix the flour with the white sugar and half of the butter, adding a pinch of cinnamon too, if liked.
Sprinkle about a third of the flour mixture into a 9-inch square baking dish.
Add the peaches on top with all of the juice if you like a lot of sauce or half of the juice if not.
Add the rest of the flour mixture and then sprinkle 2 tablespoons of sugar on top.
Drizzle the rest of the melted butter on top.
Bake for 45 minutes or until bubbling and golden brown on top.
Let it sit for 5 minutes, then serve hot.