Smoky Pancetta Quiche

Ingredients

• 1 store-bought pie crust
• 1 egg white, beaten
• 1 tablespoon of olive oil
• 4 ounces of diced pancetta
• 1 tablespoon of butter, plus more for buttering the pan
• 2 teaspoons of flour (for flouring the tart pan)
• 8 ounces of sliced white button mushrooms
• 2 large shallots, diced
• 3 ounces of baby arugula
• 4 eggs
• 1/8 to 1/4 teaspoon of chipotle hot sauce
• 1/8 teaspoon of smoked paprika
• 1/4 teaspoon of freshly cracked black pepper
• 1/4 teaspoon of kosher salt
• 1/2 cup of shredded smoked mozzarella cheese