George Chiala Farms - George's Recipe of the Month.

Ingredients

• 1 sheet of pie dough
• 1/3 cup whole milk ricotta
• 6 oz. crimini mushrooms, cut into slices
• 1/4 of a jumbo white onion, cut into thin crescent-shaped slices
• 1.5 oz gruyere cheese, shredded
• parmesan cheese, for grating as a garnish
• pinch of salt and freshly ground pepper
• pinch of nutmeg
• 1 egg, separated into white and yolk
• olive oil
• 1 sprig of thyme