Onion Cheddar Quiche Recipe

Ingredients

• 1 piece Pre-made pie crust
• 2 tablespoons Unsalted butter
• 2 large Yellow onion
• 0.5 teaspoon Salt
• 0.25 teaspoon Black pepper
• 0.5 teaspoon Granulated sugar
• 4 large Eggs
• 1.5 cups Heavy cream
• 0.5 cup Whole milk
• 0.25 teaspoon Ground nutmeg
• 1.5 cups Sharp cheddar cheese
• 2 tablespoons Fresh parsley (optional, for garnish)