Spinach and Cheese Empanadas Recipe

Ingredients (13)

• 20 to 24 empanada shells, store-bought or homemade
• 3 tablespoons olive oil
• 1/4 cup onion, coarsely chopped
• 1 clove garlic, minced
• 6 ounces baby spinach
• Kosher salt, to taste
• Freshly ground black pepper, to taste
• 1/2 cup all-purpose flour
• 1 cup milk
• 3 tablespoons unsalted butter
• 2 large eggs
• 1 cup grated Cheddar, Monterey jack, or mozzarella
• 2 tablespoons grated Parmesan