Spinach Pie with Pancetta

Details

Ingredients

• 3 tablespoons extra-virgin olive oil
• ½ large red onion, diced
• 2 cloves garlic, minced
• ¼ cup cubed pancetta
• 1 (10 ounce) box frozen chopped spinach - thawed, drained and squeezed dry
• 3 tablespoons feta cheese
• 4 (1 ounce) slices Provolone cheese
• 1 sheet frozen puff pastry, thawed
• 1 egg white