Step 1

In a medium bowl, toss the flour with the grated cheese. Evenly spread the cheese over the bottom of the pie crust. Top the cheese with the diced ham.

Step 2

In a medium bowl, whisk together eggs, half and half, salt, pepper and dry mustard. Stir in the green onions. Pour the egg mixture over the ham and cheese.

Step 3

Cover the unbaked quiche with plastic wrap, then with foil, sealing the edges well. Place the prepared quiche in the freezer.

Step 4

When ready to bake, preheat the oven to 400 degrees. Do not thaw the quiche!

Step 5

Remove the foil and plastic wrap. Place the foil around the edges of the crust to prevent burning.

Step 6

Place the frozen quiche in the oven and bake for about 1 hour, or until the filling is set and the crust is golden brown.

Step 7

To cook the quiche immediately (without freezing first), preheat the oven to 350 degrees and bake for 45 minutes to 1 hour.