This free form pie is simply the easiest you'll ever make. It consists of a buttery pastry and filling.
I have made my pastry completely by hand but you can also obtain a good result using a food processor.
The filling was even easier - no cooking required, just combine the sliced apples with sugar, lemon juice and all purpose flour. Keep the sliced apples separately, it will produce more juice if kept longer. When you have rolled out the pastry, combine the apple (without the juice) with the rest of the ingredients except the butter and mound them on your pastry. This will often take care of the problem of soggy base.
I have given my crostata a makeover by topping the apple mixture with pastry strips rather than weaving a traditional lattice but it can be done without it.