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1
Preheat oven to 475F.
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2
Place the potatoes on a baking sheet in the middle of the oven.
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3
Bake 45 to 50 minutes, until tender and slightly crisp; test with a knife or skewer.
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4
Remove and let cool.
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5
Leave the oven set at 475F.
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6
Meanwhile, make the filling: In large frying pan over medium heat, warm remaining 2 tablespoons olive oil.
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7
Add onion and saute, stirring frequently, about 5 minutes, or until translucent.
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8
Add eggplant and cook 5 to 7 minutes, stirring, until it begins to soften.
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9
Add bell pepper and cook, stirring, 5 minutes longer.
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10
Add tomatoes, garlic, basil and vinegar, and continue cooking 5 to 10 minutes longer, or until the liquid evaporates and eggplant is soft.
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11
Season with salt and pepper.
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12
Set aside.
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13
Cut each potato in half crosswise.
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14
If bottoms are uneven, cut off a thin slice so they will stand upright once filled.
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15
Scoop out most of the pulp from each half, leaving only a thin shell; reserve inner pulp for another use.
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16
Return the potato shells to the baking sheet, hollow sides down, and brush the skins with 2 tablespoons of the olive oil.
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17
Bake 10 to 15 minutes, until crisp.
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18
Remove from oven and reduce the oven temperature to 425F.
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19
Sprinkle the insides of the potato shells with some of the parmesan cheese.
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20
Spoon in the filling and place on an ungreased baking sheet.
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21
Sprinkle with the remaining cheese.
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22
Bake 10 to 15 minutes, or until heated through.
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23
Serve immediately.