1/2 cup Chopped fresh flat-leaf parsley
6 oz. Gruyere cheese, grated
1/8 tsp. Freshly grated nutmeg
1 tbsp. Dijon mustard
1 cup Whole milk
2 cups Heavy cream
6 Large eggs
2 tsp. Fresh thyme leaves
Freshly ground black pepper
Kosher salt
2 Large leeks (white and light green parts), sliced
6 slices Bacon, sliced
1 Basic Pie Dough