Cut the broccoli into florets. Blanch in boiling water for a couple of minutes, then drain and set aside.

In a bowl, whisk together the eggs, cream cheese, heavy cream, mustard, salt, and pepper. Set aside.

Line a pie dish with the crust and spread the broccoli and mozzarella evenly over it.

Pour the egg and cream mixture over the top. Sprinkle with grated Parmesan cheese.

Bake in a preheated oven at 340°F (170°C) for about 35 minutes, or until golden brown. Let cool for a few minutes before serving.