Turkish Stuffed Eggplants

Name: Turkish Stuffed Eggplants
Ingredients: 4 medium eggplants (1¾ lb. total); Kosher salt; Freshly ground black pepper; 1¼ cups extra-virgin olive oil, divided, plus more for drizzling; 2 large white onions, thinly sliced (2½ cups); 1 medium red bell pepper, finely chopped (1½ cups); 4 medium garlic cloves, minced (1 Tbsp.); 1½ tsp. ground cumin; 1 tsp. sweet paprika; ¼ tsp. ground cinnamon; ¼ cup plus 1 Tbsp. finely chopped Italian parsley leaves, divided