Whisk together eggs, half & half, melted butter, flour, nutmeg, salt and pepper.
Evenly divide the ham, bacon and most of the green onions across the two pie shells. (Reserve a small amount of green onion to sprinkle on top at the end).
Divide the grated cheese evenly between the two pie shells.
Pour half of the egg mixture over the cheese in one pie plate, then do the same to the other with the remaining egg mixture.
Sprinkle the remaining green onions on the top of each quiche.
Bake at 375°F for about 40 minutes, until the egg has set and the top is golden brown.
Let cool slightly before serving.