5-ingredient caramelised onion tart

Preheat the oven to 190°C.
Cut the ham into cubes and set aside. Gently cook the onion and celery in the butter until soft and glossy. Add the mushrooms and increase the heat.
Stir-fry until just cooked but still fleshy. Reduce the heat and stir in the flour.
Gradually add the stock and bring to a boil, stirring. Reduce the heat and simmer for a few minutes, still stirring, until thickened. Stir in the cream, then add the cubed ham and parsley. Season to taste, then allow to cool.
Turn the ham into 8 small individual buttered pie dishes. Brush the edges of the dishes with a little water and cover with pastry.
Brush the pastry with beaten egg and trim, if you like, with any pastry off-cuts. Bake for 20 minutes, or until nicely browned and bubbling hot. Serve with salad greens.
Cook's note: Use tongue or chicken instead of ham, if you prefer and make your own easy puff pastry at home.