Freshly chopped parsley, for serving
16 oz. Fresh mozzarella, sliced
1 tsp. Dried oregano
3/4 cup Grated Parmesan, divided
1 Large egg, beaten
16 oz. Ricotta
5 oz. Baby spinach
2 cups Marinara sauce
Freshly ground black pepper
Kosher salt
1 pound Sweet Italian sausage, casings removed
2 cloves Garlic, minced
1 Large onion, chopped
2 tbsp. Extra-virgin olive oil
3 Large sweet potatoes, peeled and thinly sliced
Cooking spray