Step 1

Position rack in upper third of oven; preheat to 400 degrees F. Line a rimmed baking sheet with foil.

Step 2

Cut each eggplant in half lengthwise. Using a spoon, scoop out flesh from the halves, leaving about 1/2-inch border on the sides and bottoms. Coarsely chop the flesh and set aside.

Step 3

Drizzle the insides of the eggplant shells evenly with 1 tablespoon oil. Place the shells, cut-side up, on the prepared baking sheet and roast until tender, 20 to 25 minutes. Remove from oven and increase oven temperature to broil.

Step 4

While the eggplant roasts, heat the remaining 1 tablespoon oil in a large skillet over medium-high heat. Add onion; cook, stirring often, until softened, 3 to 4 minutes. Add tomato paste, cumin, and garlic; cook, stirring constantly, until fragrant, about 1 minute. Add tomatoes, bell pepper and the reserved chopped eggplant; cook, stirring occasionally, until the eggplant is tender, 8 to 10 minutes. Remove from heat; stir in parsley, olives and vinegar.

Step 5

Divide the filling evenly among the eggplant shells; top each with 3 tablespoons feta. Broil until the cheese is melted and golden, 6 to 8 minutes. Sprinkle with fresh oregano and dill, if desired.