Eggs Casserole with Cheese and Bacon: A Rustic Baked Delight

4 fresh
eggs 100 g smoked bacon (or diced bacon)
100 g grated cheese (Emmental, Comté or Mozzarella)
10 cl heavy cream
1 small shallot,
finely chopped 1 knob of butter to grease the dish
Salt & freshly ground
pepper Chopped fresh parsley (for garnish, optional)