Spinach Pie with Pancetta

Ingredients (9)

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