Storage: Empanadas can be stored in an airtight container in the refrigerator for up to 3 days. Reheat in a 350°F oven for 10 minutes to restore crispness.
Substitutions: For a vegetarian version, omit the bacon and bacon drippings, using olive oil for sautéing the onions and garlic instead.
Tips: Ensure the spinach is thoroughly drained to prevent a soggy filling. If using fresh spinach, wilt it first and squeeze out excess moisture.
Variations: Add diced apples or pears to the filling for a sweet-savory twist, or include shredded cheese like mozzarella for extra meltiness.