Spinach Quiche

Bahan-bahan (6 porsi)

• 1 Whole Wheat Pie Crust
• 1 tablespoon extra-virgin olive oil
• 1 cup leeks (white and light green parts only (about 1 small leek))
• 3 cups fresh baby spinach
• 4 large eggs
• 2 large egg whites
• ¾ cup non-fat milk
• ¼ cup plain non-fat Greek yogurt
• ¼ teaspoon kosher salt
• ¼ teaspoon ground black pepper
• 1 cup reduced-fat feta cheese (crumbled (4 ounces))