Cut the chicken thighs into chunks, heat 1 tbsp olive oil in a pan and brown them off all over. Place in slow cooker.
600 g chicken thigh fillets
Slice the onion and leeks, fry in another tbsp olive oil until soft.
2 leeks, 1 onion
Add the plain flour, stir so it coats all the ingredients. Transfer to slow cooker.
45 g plain flour (all-purpose flour)
Add chicken stock (made with stock cube and boiling water), ham chunks, chopped parsley, creme fraiche, lemon zest and salt and pepper. Stir.
150 ml water, 1 chicken stock cube, 100 g ham chunks, 3 g curly parsley, 150 ml creme fraiche, ½-1 tsp lemon zest
Cook on high for 3-4 hours until fully cooked. Leave to cool.
Transfer the filling to a pie dish once cool.(Letting the filling cool ensures the pastry lid won't go soggy).
Place the pastry sheet on top of the pie dish, trim to size, crimp the edges using a fork, brush with a little oil or beaten egg, cut out a steam hole in the centre.
1 sheet ready-rolled shortcrust pastry
Preheat oven to 200 degrees C (fan) and cook for 35-38 minutes until the pastry is golden brown.
Serve right away, with green veg and bread to get every last bit of the tasty sauce!