Caprese Quiche

INGREDIENTS

• 1 (9 inch) refrigerated pie crust
• 2 tablespoons olive oil
• 1/4 cup diced onion
• 8 large eggs
• 1/4 teaspoon lemon juice
• 10 leaves chopped fresh basil
• 1/4 teaspoon salt
• 1 pinch ground black pepper
• 2 tomatoes, diced
• 1 (12 ounce) package fresh mozzarella cheese