Preheat oven to 200 degrees celsius. In a 7-inch round baking dish layer the slices of peaches. Sprinkle over 2 tbsp of sugar and set aside.
In a large bowl, combine the flour, sugar and butter. Use your fingers to bring it all together until the mix is no longer sandy and you have something that resembles a dough.
Scoop out spoonfuls of the dough and press out on top of the peaches. I like to leave little bits of peach poking out - but mostly just for aesthetic purposes!
Once you have used up all the dough, place in the oven and bake for 30 minutes. At this point, remove the dish from the oven and sprinkle with the remaining 1 tbsp of sugar - sprinkle a little water over using your fingertips - this will help the sugar dissolve and give you a crunchy top - and then place back in the oven for a further 20 minutes.