Heat the oven to 180C/fan 160C/gas 4.
Heat a spray of olive oil in a frying pan, add the sliced leeks and fry for 5 minutes until softened.
Add the garlic for a minute, then add the chicken. Fry for another 5 minutes, then stir in the flour.
Stir in the crème fraîche and the stock, season and bring to a simmer. Cook for a few minutes until the sauce thickens.
Blitz the ciabatta in a small blender so you get large breadcrumbs.
Stir the parsley into the filling and spoon into 4 individual pie dishes, scatter over the breadcrumbs.
Bake for 20-25 minutes until the tops are golden and crisp. Serve with green beans.
