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1
Position rack in center of oven and preheat to 400u00b0F. Place potatoes directly on oven rack and bake until tender when pierced with fork, about 1 hour 15 minutes. Transfer to platter and let stand until cool enough to handle. DO AHEAD:
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2
Cover and chill.
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3
Cut potatoes horizontally in half. Using spoon, scoop out pulp, leaving 1/3-inch-thick shell. Transfer potato pulp to medium bowl and mash; mix in cheese, melted butter, cilantro, green onion, chile, and sesame seeds. Season potato mixture generously with salt and pepper; divide among potato shells.DO AHEAD:
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4
Cover and chill.
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5
Combine first 6 ingredients in processor. Using on/off turns, blend until mixture is finely chopped. Add yogurt, oil, and lemon juice and process until smooth puree forms. Transfer to small bowl. Season to taste with salt and pepper. DO AHEAD:
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6
Cover and refrigerate.
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7
Remove top rack from grill. Place disposable aluminum baking pan in center of bottom rack (if using 2-burner gas grill, place pan on 1 side of burner). Add enough water to pan to reach depth of 1 inch.
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8
Prepare barbecue (medium heat). If using charcoal grill, light briquettes in chimney and pour half onto rack on each side of disposable pan. If using 3-burner gas grill, light burners on left and right, leaving center burner off. If using 2-burner gas grill, light burner on side opposite disposable pan. Return top rack to grill. Place sheet of foil on grill rack above unlit burner; brush with vegetable oil.
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9
Place sesame seeds on small plate. Place half of yogurt-spice paste in shallow bowl and reserve. Spread remaining yogurt-spice paste over top of potato filling in each potato half. Sprinkle with half of sesame seeds. Dip bottom of each potato half into reserved spice paste, then dip into remaining sesame seeds. Place potatoes atop foil on grill rack above disposable pan. Cover barbecue and grill until potatoes are heated through and bubbling in center, 25 to 30 minutes. Transfer potatoes to platter and serve.
