Here's how to make Mary Berry's chicken breasts with leek, potatoes, and thyme: You'll need a large 2.3-litre (4-pint) ovenproof dish for this recipe to ensure all the flavours blend together ...

Here's how to prepare Mary Berry's recipe for chicken breasts with leek, potatoes, and thyme. You'll need a large 2.3-litre (4-pint) ovenproof dish to ensure all the flavours meld together ...

Here's how to whip up Mary Berry's recipe for chicken breasts with leek, potatoes, and thyme. You'll require a large 2.3-litre (4-pint) ovenproof dish to ensure all the flavours blend together ...

Here's how to whip up Mary Berry's chicken breasts with leek, potatoes, and thyme: You'll need a large 2.3-litre (4-pint) ovenproof dish for this recipe to ensure all the flavours meld together ...