Baked Sausage & Eggplant Gratin - Nonna Pia's

Ingredients

• 1 tbsp olive oil
• 1 lb (3 to 4) crumbled Italian sausage, casing removed and
• 1 ½ cups Nonna Pia’s Puttanesca Sauce
• 2 tbsp olive oil, plus more as needed
• 1 large (1 ½ to 2 lbs) eggplant, cut into 1/2-in slices
• Salt and pepper, to taste
• 1 cup shredded mozzarella
• ¼ cup panko